-- Copyright 2007-2012 Mitchell mitchell.att.foicica.com. See LICENSE.
-- This is a DUMMY FILE used for making LuaDoc for built-in functions in the
-- global buffer table.

---
-- The current buffer in the current view.
-- It also represents the structure of any buffer table in `_G._BUFFER`.
-- @field additional_caret_fore (number)
--   The foreground color of additional carets in `0xBBGGRR` format.
-- @field additional_carets_blink (bool)
--   Whether additional carets will blink.
-- @field additional_carets_visible (bool)
--   Whether additional carets are visible.
-- @field additional_sel_alpha (number)
--   The alpha of additional selections. Alpha ranges from `0` (transparent) to
--   `255` (opaque) or `256` for no alpha.
-- @field additional_sel_back (number)
--   The background color of additional selections in `0xBBGGRR` format.
--   `buffer:set_sel_back(true, ...)` must have been called previously for this
--   to have an effect.
-- @field additional_sel_fore (number)
--   The foreground color of additional selections in `0xBBGGRR` format.
--   `buffer:set_sel_fore(true, ...)` must have been called previously for this
--   to have an effect.
-- @field additional_selection_typing (bool)
--   Whether typing can be performed into multiple selections.
-- @field anchor (number)
--   The position of the opposite end of the selection to the caret.
-- @field annotation_lines (table, Read-only)
--   Table of the number of annotation lines for lines starting from zero.
-- @field annotation_style (table)
--   Table of style numbers for annotations for lines starting at zero.
-- @field annotation_style_offset (number)
--   The start of the range of style numbers used for annotations.
--   Annotation styles may be completely separated from standard text styles by
--   setting a style offset. For example, setting this to `512` would allow the
--   annotation styles to be numbered from `512` upto `767` so they do not
--   overlap styles set by lexers (or margins if margins offset is `256`). Each
--   style number set with `buffer.annotation_style` has the offset added before
--   looking up the style.
-- @field annotation_visible (number)
--   The visibility of annotations.
--
--   * `_SCINTILLA.constants.ANNOTATION_HIDDEN` (0)
--     Annotations are not displayed.
--   * `_SCINTILLA.constants.ANNOTATION_STANDARD` (1)
--     Annotations are drawn left justified with no adornment.
--   * `_SCINTILLA.constants.ANNOTATION_BOXED` (2)
--     Annotations are indented to match the text and are surrounded by a box.
-- @field auto_c_auto_hide (bool)
--   Whether or not autocompletion is hidden automatically when nothing matches.
--   By default, the list is cancelled if there are no viable matches (the user
--   has typed characters that no longer match a list entry).
-- @field auto_c_cancel_at_start (bool)
--   Whether auto-completion is cancelled by backspacing to a position before
--   where the box was created.
--   If `false`, the list is not cancelled until the caret moves before the
--   first character of the word being completed. If `true`, cancel if the user
--   backspaces to a position before where it was created.
-- @field auto_c_choose_single (bool)
--   Whether a single item auto-completion list automatically choose the item.
--   The default is to display the list even if there is only a single item.
-- @field auto_c_drop_rest_of_word (bool)
--   Whether or not autocompletion deletes any word characters after the
--   inserted text upon completion.
--   The default is `false`.
-- @field auto_c_fill_ups (string, Write-only)
--   A set of characters that when typed will cause the autocompletion to choose
--   the selected item.
--   By default, no fillup characters are set.
-- @field auto_c_ignore_case (bool)
--   Whether case is significant when performing auto-completion searches.
--   By default, matching of characters to list members is case sensitive.
-- @field auto_c_max_height (number)
--   The maximum height, in rows, of auto-completion and user lists.
--   The default is 5 rows.
-- @field auto_c_max_width (number)
--   The maximum width, in characters, of auto-completion and user lists.
--   Set to `0` to autosize to fit longest item, which is the default.
-- @field auto_c_separator (number)
--   The auto-completion list separator character byte.
--   The default is the space character.
-- @field auto_c_type_separator (number)
--   The auto-completion list type-separator character byte.
--   The default is `'?'`. Autocompletion list items may display an image as
--   well as text. Each image is first registered with an integer type. Then
--   this integer is included in the text of the list separated by a `?` from
--   the text.
-- @field back_space_un_indents (bool)
--   Whether a backspace pressed when caret is within indentation unindents.
-- @field buffered_draw (bool)
--   Whether drawing is buffered.
--   If drawing is buffered then each line of text is drawn into a bitmap buffer
--   before drawing it to the screen to avoid flicker. The default is for
--   drawing to be buffered. first or directly onto the screen.
-- @field call_tip_back (number, Write-only)
--   The background color for the call tip in `0xBBGGRR` format.
-- @field call_tip_fore (number, Write-only)
--   The foreground color for the call tip in `0xBBGGRR` format.
-- @field call_tip_fore_hlt (number, Write-only)
--   The foreground color for the highlighted part of the call tip in `0xBBGGRR`
--   format.
-- @field call_tip_position (boolean)
--   The position of calltip, above or below text.
--   By default the calltip is displayed below the text. Setting to `true` will
--   display it above the text.
-- @field call_tip_use_style (number)
--   Enable use of `_SCINTILLA.constants.STYLE_CALLTIP` and set call tip tab
--   size in pixels.
--   If the tab size is less than `1`, Tab characters are not treated specially.
-- @field caret_fore (number)
--   The foreground color of the caret in `0xBBGGRR` format.
-- @field caret_line_back (number)
--   The color of the background of the line containing the caret in `0xBBGGRR`
--   format.
-- @field caret_line_back_alpha (number)
--   The background alpha of the caret line.
--   Alpha ranges from `0` (transparent) to `255` (opaque) or `256` for no
--   alpha.
-- @field caret_line_visible (bool)
--   Whether the background of the line containing the caret is in a different
--   color.
-- @field caret_period (number)
--   The time in milliseconds that the caret is on and off.
--   Setting the period to `0` stops the caret blinking. The default value is
--   500 milliseconds.
-- @field caret_sticky (number)
--   The caret preferred x position changing when the user types.
--
--   * `_SCINTILLA.constants.SC_CARETSTICKY_OFF` (0)
--     All text changes (and all caret position changes) will remember the
--     caret's new horizontal position when moving to different lines.
--     This is the default.
--   * `_SCINTILLA.constants.SC_CARETSTICKY_ON` (1)
--     The only thing which will cause the editor to remember the horizontal
--     caret position is moving the caret with mouse or keyboard (left/right
--     arrow keys, home/end keys, etc).
--   * `_SCINTILLA.constants.SC_CARETSTICKY_WHITESPACE` (2)
--     The caret acts like sticky off except under one special case; when space
--     or tab characters are inserted. (Including pasting *only space/tabs* --
--     undo, redo, etc. do not exhibit this behavior.)
-- @field caret_style (number)
--   The style of the caret to be drawn.
--
--   * `_SCINTILLA.constants.CARETSTYLE_INVISIBLE` (0)
--     Not draw the caret at all.
--   * `_SCINTILLA.constants.CARETSTYLE_LINE` (1)
--     A line caret. This is the default value.
--   * `_SCINTILLA.constants.CARETSTYLE_BLOCK` (2)
--     A block caret.
-- @field caret_width (number)
--   The width of the insert mode caret in pixels.
--   Can be `0`, `1`, `2` or `3` pixels. The default width is 1 pixel. This
--   setting only affects the width of the cursor when the cursor style is set
--   to line caret mode, it does not affect the width for a block caret.
-- @field char_at (table, Read-only)
--   Table of character bytes at positions in the document starting at zero.
-- @field code_page (number)
--   The code page used to interpret the bytes of the document as characters.
--   The `_SCINTILLA.constants.SC_CP_UTF8` value can be used to enter Unicode
--   mode.
-- @field column (table, Read-only)
--   Table of column numbers, taking tab widths into account, for positions
--   starting from zero.
-- @field control_char_symbol (number)
--   The way control characters are displayed.
--   If less than `32`, keep the rounded rectangle as ASCII mnemonics.
--   Otherwise, use the given character byte. The default value is `0`.
-- @field current_pos (number)
--   The position of the caret.
--   When setting, the caret is not scrolled into view.
-- @field cursor (number)
--   The cursor type.
--
--   * `_SCINTILLA.constants.SC_CURSORNORMAL` (-1)
--     The normal cursor is displayed.
--   * `_SCINTILLA.constants.SC_CURSORWAIT` (4)
--     The wait cursor is displayed when the mouse is over the view.
-- @field direct_function (number, Read-only)
--   A pointer to a function that processes messages for this view.
-- @field direct_pointer (number, Read-only)
--   A pointer value to use as the first argument when calling the function
--   returned by direct_function.
-- @field dirty (bool)
--   Flag indicating whether or not the buffer has been modified since it was
--   last saved.
-- @field eol_mode (number)
--   The current end of line mode.
--
--   * `_SCINTILLA.constants.SC_EOL_CRLF` (0)
--     `CRLF`.
--   * `_SCINTILLA.constants.SC_EOL_CR` (1)
--     `CR`.
--   * `_SCINTILLA.constants.SC_EOL_LF` (2)
--     `LF`.
-- @field edge_colour (number)
--   The color used in edge indication in `0xBBGGRR` format.
-- @field edge_column (number)
--   The column number which text should be kept within.
-- @field edge_mode (number)
--   The edge highlight mode.
--
--   * `_SCINTILLA.constants.EDGE_NONE` (0)
--     Long lines are not marked. This is the default state.
--   * `_SCINTILLA.constants.EDGE_LINE` (1)
--     A vertical line is drawn at the column number set by
--     `buffer.edge_column`.
--   * `_SCINTILLA.constants.EDGE_BACKGROUND` (2)
--     The background color of characters after the column limit is changed to
--     the color set by `buffer.edge_colour`.
-- @field encoding (string or nil)
--   The encoding of the file on the hard disk.
--   It will be `nil` if the file is a binary file.
-- @field encoding_bom (string)
--   The byte-order mark of the file encoding (if any).
-- @field end_at_last_line (bool)
--   Whether the maximum scroll position has the last line at the bottom of the
--   view.
--   If `false`, allows scrolling one page below the last line. The default
--   value is `true`.
-- @field end_styled (number, Read-only)
--   The position of the last correctly styled character.
-- @field extra_ascent (number)
--   The extra ascent, the maximum that any style extends above the baseline,
--   added to each line.
-- @field extra_descent (number)
--   The extra descent, the maximum that any style extends below the baseline,
--   added to each line.
-- @field filename (string)
--   The absolute path to the file associated with this buffer.
--   It is encoded in UTF-8. Use [`string.iconv()`](string.html#iconv) for
--   charset conversions.
-- @field first_visible_line (number)
--   The display line at the top of the display.
-- @field focus (bool)
--   The internal focus flag.
-- @field fold_expanded (bool)
--   Expanded state of a header line.
-- @field fold_level (table)
--   Table of fold levels for lines starting from zero.
--   Fold levels encodes an integer level along with flags indicating whether
--   the line is a header and whether it is effectively white space.
--
--   * `_SCINTILLA.constants.SC_FOLDLEVELBASE` (0x400)
--     Initial fold level.
--   * `_SCINTILLA.constants.SC_FOLDLEVELWHITEFLAG` (0x1000)
--     Indicates that the line is blank.
--   * `_SCINTILLA.constants.SC_FOLDLEVELHEADERFLAG` (0x2000)
--     Indicates that the line is a header (fold point).
-- @field fold_parent (table, Read-only)
--   Table of parent line numbers for child lines starting from zero.
--   `-1` means no line was found.
-- @field font_quality (number) (Windows only)
--   The quality level for text.
--
--   * `_SCINTILLA.constants.SC_EFF_QUALITY_DEFAULt` (0).
--   * `_SCINTILLA.constants.SC_EFF_QUALITY_NON_ANTIALIASED` (1).
--   * `_SCINTILLA.constants.SC_EFF_QUALITY_ANTIALIASED` (2).
--   * `_SCINTILLA.constants.SC_EFF_QUALITY_LCD_OPTIMIZED` (3).
-- @field h_scroll_bar (bool)
--   Whether the horizontal scroll bar is visible.
--   Set to `false` to never see it and `true` to enable it again. The default
--   state is to display it when needed.
-- @field highlight_guide (number)
--   The highlighted indentation guide column.
--   Set to `0` to cancel this highlight.
-- @field hotspot_active_underline (bool)
--   Whether active hotspots are underlined.
-- @field hotspot_single_line (bool)
--   Whether hotspots are limited to single line so hotspots on two lines do not
--   merge.
-- @field indent (number)
--   Ihe number of spaces used for one level of indentation.
--   For a width of `0`, the indent size is the same as the tab size.
-- @field indentation_guides (number)
--   Indentation guides appearance.
--   Indentation guides are dotted vertical lines that appear within indentation
--   white space every indent size columns.
--
--   * `_SCINTILLA.constants.SC_IV_NONE` (0)
--     No indentation guides are shown.
--   * `_SCINTILLA.constants.SC_IV_REAL` (1)
--     Indentation guides are shown inside real indentation white space.
--   * `_SCINTILLA.constants.SC_IV_LOOKFORWARD` (2)
--     Indentation guides are shown beyond the actual indentation up to the
--     level of the next non-empty line.
--     If the previous non-empty line was a fold header then indentation guides
--     are shown for one more level of indent than that line. This setting is
--     good for Python.
--   * `_SCINTILLA.constants.SC_IV_LOOKBOTH` (3)
--     Indentation guides are shown beyond the actual indentation up to the
--     level of the next non-empty line or previous non-empty line whichever is
--     the greater.
--     This setting is good for most languages.
-- @field indic_alpha (table)
--   Table of alpha transparency values ranging from `0` (transparent) to `255`
--   (opaque) or `256` (no alpha) for indicators from `0` to `31`.
--   Used for drawing the fill color of the `INDIC_ROUNDBOX` and
--   `INDIC_STRAIGHTBOX` rectangle.
-- @field indic_fore (table)
--   Table of foreground colors in `0xBBGGRR` format for indicators from `0` to
--   `31`.
-- @field indic_outline_alpha (table)
--   Table of alpha transparency values ranging from `0` (transparent) to `255`
--   (opaque) or `256` (no alpha) for indicators from `0` to `31`.
--   Used for drawing the outline color of the `INDIC_ROUNDBOX` and
--   `INDIC_STRAIGHTBOX` rectangle.
-- @field indic_style (table)
--   Table of styles for indicators from `0` to `31`.
--
--   * `_SCINTILLA.constants.INDIC_PLAIN` (0)
--     Underlined with a single, straight line.
--   * `_SCINTILLA.constants.INDIC_SQUIGGLE` (1)
--     A squiggly underline. Requires 3 pixels of descender space.
--   * `_SCINTILLA.constants.INDIC_TT` (2)
--     A line of small T shapes.
--   * `_SCINTILLA.constants.INDIC_DIAGONAL` (3)
--     Diagonal hatching.
--   * `_SCINTILLA.constants.INDIC_STRIKE` (4)
--     Strike out.
--   * `_SCINTILLA.constants.INDIC_HIDDEN` (5)
--     An indicator with no visual effect.
--   * `_SCINTILLA.constants.INDIC_BOX` (6)
--     A rectangle around the text.
--   * `_SCINTILLA.constants.INDIC_ROUNDBOX` (7)
--     A rectangle with rounded corners around the text using translucent
--     drawing with the interior usually more transparent than the border. Use
--     `buffer.indic_alpha` and `buffer.indic_outline_alpha` to control the
--     alpha transparency values. The default alpha values are `30` for fill
--     color and `50` for outline color.
--   * `_SCINTILLA.constants.INDIC_STRAIGHTBOX` (8)
--     A rectangle around the text using translucent drawing with the interior
--     usually more transparent than the border.
--     You can use `buffer.indic_alpha` and `buffer.indic_outline_alpha` to
--     control the alpha transparency values. The default alpha values are `30`
--     for fill color and `50` for outline color.
--   * `_SCINTILLA.constants.INDIC_DASH` (9)
--     A dashed underline.
--   * `_SCINTILLA.constants.INDIC_DOTS` (10)
--     A dotted underline.
--   * `_SCINTILLA.constants.INDIC_SQUIGGLELOW` (11)
--     Similar to `INDIC_SQUIGGLE` but only using 2 vertical pixels so will fit
--     under small fonts.
--   * `_SCINTILLA.constants.INDIC_DOTBOX` (12)
--     A dotted rectangle around the text using translucent drawing.
--     Translucency alternates between the alpha and outline alpha settings with
--     the top-left pixel using the alpha setting. `buffer.indic_alpha` and
--     `buffer.indic_outline_alpha` control the alpha transparency values.
--     The default values are `30` for alpha and `50` for outline alpha. To
--     avoid excessive memory allocation the maximum width of a dotted box is
--     4000 pixels.
--   * Use `_SCINTILLA.next_indic_number()` for custom indicators.
-- @field indic_under (table)
--   Table of booleans for drawing under text or over (default) for indicators
--   from `0` to `31`.
-- @field indicator_current (number)
--   The indicator in the range of `0` to `31` used for
--   `buffer:indicator_fill_range()` and `buffer:indicator_clear_range()`.
-- @field indicator_value (number)
--   The indicator value used for `buffer:indicator_fill_range()`.
--   Currently all values are drawn the same.
-- @field keys_unicode (bool)
--   Interpret keyboard input as Unicode.
-- @field layout_cache (number)
--   The degree of caching of layout information.
--
--   * `_SCINTILLA.constants.SC_CACHE_NONE` (0)
--     No lines are cached.
--   * `_SCINTILLA.constants.SC_CACHE_CARET` (1)
--     The line containing the text caret.
--     This is the default.
--   * `_SCINTILLA.constants.SC_CACHE_PAGE` (2)
--     Visible lines plus the line containing the caret.
--   * `_SCINTILLA.constants.SC_CACHE_DOCUMENT` (3)
--     All lines in the document.
-- @field length (number, Read-only)
--   The number of bytes in the document.
-- @field lexer (number)
--   The lexing language of the document.
-- @field line_count (number, Read-only)
--   The number of lines in the document.
--   There is always at least one.
-- @field line_end_position (table, Read-only)
--   Table of positions after the last visible characters on a line for lines
--   starting from zero.
-- @field line_indent_position (table, Read-only)
--   Table of positions before the first non indentation character on a line for
--   lines starting from zero.
-- @field line_indentation (table)
--   Table of line indentation amounts for lines starting from zero.
--   The indentation is measured in character columns, which correspond to the
--   width of space characters.
-- @field line_state (table)
--   Table of extra styling information for lines starting from zero.
--   As well as the 8 bits of lexical state stored for each character there is
--   also an integer stored for each line. This can be used for longer lived
--   parse states.
-- @field line_visible (bool, Read-only)
--   Is a line visible?
-- @field lines_on_screen (number, Read-only)
--   The number of lines completely visible.
-- @field lines_visible (bool, Read-only)
--   Are all lines visible?
-- @field main_selection (number)
--   The main selection.
--   The main selection may be displayed in different colors or with a
--   differently styled caret. Only an already existing selection can be made
--   main.
-- @field margin_cursor_n (table)
--   Table of cursors shown for margins from zero to four.
--   A reversed arrow cursor is normally shown over all margins.
--
--   * `_SCINTILLA.constants.SC_CURSORARROW`
--     Normal arrow.
--   * `_SCINTILLA.constants.SC_CURSORREVERSEARROW`
--     Reversed arrow.
-- @field margin_left (number)
--   The size in pixels of the left margin.
--   The default is to one pixel.
-- @field margin_mask_n (table)
--   Table of marker masks for margins from zero to four.
--   A mask determines which markers are displayed in a margin.
-- @field margin_options (number)
--   A bit mask of margin options.
--
--   * `_SCINTILLA.constants.SC_MARGINOPTION_NONE` (0)
--     None (default).
--   * `_SCINTILLA.constants.SC_MARGINOPTION_SUBLINESELECT` (1)
--     Controls how wrapped lines are selected when clicking on margin in front
--     of them.
--     If set, only sub line of wrapped line is selected, otherwise whole
--     wrapped line is selected.
-- @field margin_right (number)
--   The size in pixels of the right margin.
--   The default is to one pixel.
-- @field margin_sensitive_n (table)
--   Table of mouse click sensitivity booleans for margins from zero to four.
--   A click in a sensitive margin emits a `margin_click` event. By default, all
--   margins are insensitive.
-- @field margin_style (table)
--   Table of style numbers for text margin lines starting from zero.
-- @field margin_style_offset (number)
--   The start of the range of style numbers used for margin text.
--   Margin styles may be completely separated from standard text styles by
--   setting a style offset. For example, setting this to `256` would allow the
--   margin styles to be numbered from `256` upto `511` so they do not overlap
--   styles set by lexers. Each style number set with `buffer.margin_style` has
--   the offset added before looking up the style.
-- @field margin_type_n (table)
--   Table of margin types for margins from zero to four.
--
--   * `_SCINTILLA.constants.SC_MARGIN_SYMBOL` (0)
--     A symbol margin.
--   * `_SCINTILLA.constants.SC_MARGIN_NUMBER` (1)
--     A line number margin.
--   * `_SCINTILLA.constants.SC_MARGIN_BACK` (2)
--     A symbol margin that sets its background color to match the default
--     text background color.
--   * `_SCINTILLA.constants.SC_MARGIN_FORE` (3)
--     A symbol margin that sets its background color to match the default
--     text foreground color.
--   * `_SCINTILLA.constants.SC_MARGIN_TEXT` (4)
--     A text margin.
--   * `_SCINTILLA.constants.SC_MARGIN_RTEXT` (5)
--     A right justified text margin.
-- @field margin_width_n (table)
--   Table of margin widths expressed in pixes for margins from zero to four.
-- @field max_line_state (number, Read-only)
--   The last line number that has line state.
-- @field modify (bool)
--   Whether the document is different from when it was last saved.
-- @field mouse_down_captures (bool)
--   Whether the mouse is captured when its button is pressed.
-- @field mouse_dwell_time (number)
--   The time the mouse must sit still to generate a mouse dwell event.
--   If set to `_SCINTILLA.constants.SC_TIME_FOREVER`, the default, no dwell
--   events are generated.
-- @field multi_paste (bool)
--   The effect of pasting when there are multiple selections.
--
--   * `_SCINTILLA.constants.SC_MULTIPASTE_ONCE` (0)
--     Pasted text can go into just the main selection (default).
--   * `_SCINTILLA.constants.SC_MULTIPASTE_EACH` (1)
--     Pasted text can go into each selection.
-- @field multiple_selection (bool)
--   Whether multiple selections can be made.
--   When multiple selection is disabled, it is not possible to select multiple
--   ranges by holding down the Ctrl key while dragging with the mouse.
-- @field overtype (bool)
--   Overtype mode.
-- @field position_cache (number)
--   The number of entries in the position cache.
--   The position cache stores position information for short runs of text so
--   that their layout can be determined more quickly if the run recurs.
-- @field print_colour_mode (number)
--   The print color mode.
--
--   * `_SCINTILLA.constants.SC_PRINT_NORMAL` (0)
--     Print using the current screen colors.
--     This is the default.
--   * `_SCINTILLA.constants.SC_PRINT_INVERTLIGHT` (1)
--     If you use a dark screen background this saves ink by inverting the light
--     value of all colors and printing on a white background.
--   * `_SCINTILLA.constants.SC_PRINT_BLACKONWHITE` (2)
--     Print all text as black on a white background.
--   * `_SCINTILLA.constants.SC_PRINT_COLOURONWHITE` (3)
--     Everything prints in its own color on a white background.
--   * `_SCINTILLA.constants.SC_PRINT_COLOURONWHITEDEFAULTBG` (4)
--     Everything prints in its own color on a white background except that line
--     numbers use their own background color.
-- @field print_magnification (number)
--   The print magnification added to the point size of each style for printing.
-- @field print_wrap_mode (number)
--   Printing line wrap mode.
--
--   * `_SCINTILLA.constants.SC_WRAP_NONE` (0)
--     Each line of text generates one line of output and the line is truncated
--     if it is too long to fit into the print area.
--   * `_SCINTILLA.constants.SC_WRAP_WORD` (1)
--     Wraps printed output so that all characters fit into the print rectangle.
--     Tries to wrap only between words as indicated by white space or style
--     changes although if a word is longer than a line, it will be wrapped
--     before the line end. This is the default.
--   * `_SCINTILLA.constants.SC_WRAP_CHAR` (2).
-- @field property (table, Write-only)
--   Table of keyword:value string pairs used by a lexer for some optional
--   features.
-- @field property_int (table, Read-only)
--   Interprets `buffer.property[keyword]` as an integer if found or returns
--   `0`.
-- @field read_only (bool)
--   Read-only mode.
-- @field rectangular_selection_anchor (number)
--   The position of the anchor of the rectangular selection.
-- @field rectangular_selection_anchor_virtual_space (number)
--   The amount of virtual space for the anchor of the rectangular selection.
-- @field rectangular_selection_caret (number)
--   The position of the caret of the rectangular selection.
-- @field rectangular_selection_caret_virtual_space (number)
--   The amount of virtual space for the caret of the rectangular selection.
-- @field rectangular_selection_modifier (number)
--   The modifier key used to indicate that a rectangular selection should be
--   created when combined with a mouse drag.
--
--   * `_SCINTILLA.constants.SCMOD_CTRL` (2)
--     Control key (default).
--   * `_SCINTILLA.constants.SCMOD_ALT` (4)
--     Alt key.
--   * `_SCINTILLA.constants.SCMOD_SUPER` (8)
--     Left Windows key on a Windows keyboard or the Command key on a Mac.
-- @field rgba_image_height (number)
--   The height for future RGBA image data.
-- @field rgba_image_width (number)
--   The width for future RGBA image data.
-- @field scroll_width (number)
--   The document width assumed for scrolling.
--   For performance, the view does not measure the display width of the
--   document to determine the properties of the horizontal scroll bar. Instead,
--   an assumed width is used. The default value is `2000`. To ensure the width
--   of the currently visible lines can be scrolled use
--   `buffer.scroll_width_tracking`.
-- @field scroll_width_tracking (bool)
--   Whether the maximum width line displayed is used to set scroll width.
-- @field search_flags (number)
--   The search flags used by `buffer:search_in_target()`.
--
--   * `_SCINTILLA.constants.SCFIND_WHOLEWORD` (2)
--     A match only occurs with text that matches the case of the search string.
--   * `_SCINTILLA.constants.SCFIND_MATCHCASE` (4)
--     A match only occurs if the characters before and after are not word
--     characters.
--   * `_SCINTILLA.constants.SCFIND_WORDSTART` (0x00100000)
--     A match only occurs if the character before is not a word character.
--   * `_SCINTILLA.constants.SCFIND_REGEXP` (0x00200000)
--     The search string should be interpreted as a regular expression.
--   * `_SCINTILLA.constants.SCFIND_POSIX` (0x00400000)
--     Treat regular expression in a more POSIX compatible manner by
--     interpreting bare `(` and `)` for tagged sections rather than `\(` and
--     `\)`.
-- @field sel_alpha (number)
--   The alpha of the selection, between `0` (transparent) and `255` (opaque),
--   or `256` for no alpha.
-- @field sel_eol_filled (bool)
--   The selection end of line fill.
--   The selection can be drawn up to the right hand border by setting this
--   property.
-- @field selection_end (number)
--   The position that ends the selection - this becomes the current position.
--   This does not make the caret visible.
-- @field selection_is_rectangle (bool, Read-only)
--   Is the selection rectangular?
--   The alternative is the more common stream selection.
-- @field selection_mode (number)
--   The mode of the current selection.
--
--   * `_SCINTILLA.constants.SC_SEL_STREAM` (0)
--     Stream.
--   * `_SCINTILLA.constants.SC_SEL_RECTANGLE` (1)
--     Rectangle.
--   * `_SCINTILLA.constants.SC_SEL_LINES` (2)
--     Lines.
--   * `_SCINTILLA.constants.SC_SEL_THIN` (3)
--     Thin rectangular.
-- @field selection_n_anchor (table)
--   Table of anchor positions for existing selections starting from zero, the
--   main selection.
-- @field selection_n_anchor_virtual_space (table)
--   Table of the amount of virtual space for anchors for existing selections
--   starting from zero, the main selection.
-- @field selection_n_caret (table)
--   Table of caret positions for existing selections starting from zero, the
--   main selection.
-- @field selection_n_caret_virtual_space (table)
--   Table of the amount of virtual space for carets for existing selections
--   starting from zero, the main selection.
-- @field selection_n_end (table)
--   Table of positions that end selections for existing selections starting
--   from zero, the main selection.
-- @field selection_n_start (table)
--   Table of positions that start selections for existing selections starting
--   from zero, the main selection.
-- @field selection_start (number)
--   The position that starts the selection - this becomes the anchor.
--   This does not make the caret visible.
-- @field selections (number, Read-only)
--   The number of selections currently active.
-- @field status (number)
--   The error status.
--
--   * `_SCINTILLA.constants.SC_STATUS_OK` (0)
--     No failures.
--   * `_SCINTILLA.constants.SC_STATUS_FAILURE` (1)
--     Generic failure.
--   * `_SCINTILLA.constants.SC_STATUS_BADALLOC` (2)
--     Memory is exhausted.
-- @field style_at (table, Read-only)
--   Table of style bytes at positions in the document starting at zero.
-- @field style_back (table)
--   Table of background colors in `0xBBGGRR` format for styles from `0` to
--   `255`.
-- @field style_bits (number)
--   The number of bits in style bytes used to hold the lexical state.
-- @field style_bits_needed (number, Read-only)
--   The number of bits the current lexer needs for styling.
-- @field style_bold (table)
--   Table of booleans for bold styles from `0` to `255`.
-- @field style_case (table)
--   Table of cases for styles from `0` to `255`.
--
--   * `_SCINTILLA.constants.SC_CASE_MIXED` (0)
--     Normal, mixed case.
--   * `_SCINTILLA.constants.SC_CASE_UPPER` (1)
--     Upper case.
--   * `_SCINTILLA.constants.SC_CASE_LOWER` (2)
--     Lower case.
-- @field style_changeable (table)
--   Table of booleans for changeable styles from `0` to `255`.
--   The default setting is `true`.
-- @field style_character_set (table)
--   Table of character sets for styles from `0` to `255`.
-- @field style_eol_filled (table)
--   Table of booleans for end of line filled styles from `0` to `255`.
-- @field style_font (table)
--   Table of font faces for styles from `0` to `255`.
-- @field style_fore (table)
--   Table of foreground colors in `0xBBGGRR` format for styles from `0` to
--   `255`.
-- @field style_hot_spot (table)
--   Table of boolean hotspot styles from `0` to `255`.
-- @field style_italic (table)
--   Table of booleans for italic styles from `0` to `255`.
-- @field style_size (table)
--   Table of font sizes for styles from `0` to `255`.
--   Font size is a whole number of points.
-- @field style_size_fractional (table)
--   Table of sizes of characters for styles from `0` to `255`.
--   Size is in hundreths of a point and multiplied by 100 internally. For
--   example, a text size of 9.4 points is set with 940.
-- @field style_underline (table)
--   Table of booleans for underlined styles from `0` to `255`.
-- @field style_visible (table)
--   Table of booleans for visible styles from `0` to `255`.
-- @field style_weight (table)
--   Table of character weights for styles from `0` to `255`.
--   The weight or boldness of a font can be set with a number between 1 and 999
--   with 1 being very light and 999 very heavy. While any value can be used,
--   fonts often only support between 2 and 4 weights with three weights being
--   common enough to use symbolic names:
--
--   * `_SCINTILLA.constants.SC_WEIGHT_NORMAL` (400)
--     Normal.
--   * `_SCINTILLA.constants.SC_WEIGHT_SEMIBOLD` (600)
--     Semi-bold.
--   * `_SCINTILLA.constants.SC_WEIGHT_BOLD` (700)
--     Bold.
-- @field tab_indents (bool)
--   Whether a tab pressed when caret is within indentation indents.
-- @field tab_width (number)
--   The visible size of a tab as a multiple of the width of a space character.
--   The default tab width is 8 characters.
-- @field target_end (number)
--   The position that ends the target which is used for updating the document
--   without affecting the scroll position.
--   The target is also set by a successful `buffer:search_in_target()`.
-- @field target_start (number)
--   The position that starts the target which is used for updating the document
--   without affecting the scroll position.
--   The target is also set by a successful `buffer:search_in_target()`.
-- @field text_length (number, Read-only)
--   The number of characters in the document.
-- @field two_phase_draw (bool)
--   Two phase drawing mode.
--   When `true`, drawing is performed in two phases, first the background and
--   then the foreground. This avoids chopping off characters that overlap the
--   next run. The default is for drawing to be two phase.
-- @field undo_collection (bool)
--   Whether to collect undo information.
--   When stopping collection, use `buffer:empty_undo_buffer()` to avoid the
--   undo buffer being unsynchronized with the data in the buffer.
-- @field use_tabs (bool)
--   Whether tabs will be used in indentation.
--   The default is `true`. `false` will only use space characters.
-- @field v_scroll_bar (bool)
--   Whether the vertical scroll bar is visible.
--   Set to `false` to never see it and `true` to enable it again. The default
--   state is to display it when required.
-- @field view_eol (bool)
--   Whether the end of line characters are visible.
--   Normally, the end of line characters are hidden.
-- @field view_ws (number)
--   The visibility of white space characters.
--
--   * `_SCINTILLA.constants.SCWS_INVISIBLE` (0)
--     The normal display mode with white space displayed as an empty background
--     color.
--   * `_SCINTILLA.constants.SCWS_VISIBLEALWAYS` (1)
--     White space characters are drawn as dots and arrows.
--   * `_SCINTILLA.constants.SCWS_VISIBLEAFTERINDENT` (2)
--     White space used for indentation is displayed normally but after the
--     first visible character, it is shown as dots and arrows.
-- @field virtual_space_options (number)
--   Virtual space options.
--
--   * `_SCINTILLA.constants.SCVS_NONE` (0)
--     Disables all use of virtual space (default).
--   * `_SCINTILLA.constants.SCVS_RECTANGULARSELECTION` (1)
--     Enabled only for rectangular selections.
--   * `_SCINTILLA.constants.SCVS_USERACCESSIBLE` (2)
--     Enabled.
-- @field whitespace_chars (string, Write-only)
--   The set of characters making up whitespace for when moving or selecting by
--   word.
--   Use after setting `buffer.word_chars`.
-- @field wrap_indent_mode (number)
--   How wrapped sublines are placed.
--   Default is fixed.
--
--   * `_SCINTILLA.constants.SC_WRAP_INDENT_FIXED` (0)
--     Wrapped sublines aligned to left of window plus amount set by
--     `buffer.wrap_start_indent`.
--   * `_SCINTILLA.constants.SC_WRAP_INDENT_SAME` (1)
--     Wrapped sublines are aligned to first subline indent.
--   * `_SCINTILLA.constants.SC_WRAP_INDENT_INDENT` (2)
--     Wrapped sublines are aligned to first subline indent plus one more level
--     of indentation.
-- @field whitespace_size (number)
--   The size of the dots used to mark space characters.
-- @field word_chars (string)
--   The set of characters making up words when moving or selecting by word.
-- @field wrap_mode (number)
--   Text word wrap mode.
--
--   * `_SCINTILLA.constants.SC_WRAP_NONE` (0)
--     Disable line wrapping.
--   * `_SCINTILLA.constants.SC_WRAP_WORD` (1)
--     Enable wrapping on word boundaries.
--   * `_SCINTILLA.constants.SC_WRAP_CHAR` (2)
--     Enable wrapping between any characters.
-- @field wrap_start_indent (number)
--   The start indent for wrapped lines.
-- @field wrap_visual_flags (number)
--   The display mode of visual flags for wrapped lines.
--
--   * `_SCINTILLA.constants.SC_WRAPVISUALFLAG_NONE` (0)
--     No visual flags.
--   * `_SCINTILLA.constants.SC_WRAPVISUALFLAG_END` (1)
--     Visual flag at end of subline of a wrapped line.
--   * `_SCINTILLA.constants.SC_WRAPVISUALFLAG_START` (2)
--     Visual flag at begin of subline of a wrapped line.
--     Subline is indented by at least 1 to make room for the flag.
-- @field wrap_visual_flags_location (number)
--   The location of visual flags for wrapped lines.
--
--   * `_SCINTILLA.constants.SC_WRAPVISUALFLAGLOC_DEFAULT` (0)
--     Visual flags drawn near border.
--   * `_SCINTILLA.constants.SC_WRAPVISUALFLAGLOC_END_BY_TEXT` (1)
--     Visual flag at end of subline drawn near text.
--   * `_SCINTILLA.constants.SC_WRAPVISUALFLAGLOC_START_BY_TEXT` (2)
--     Visual flag at beginning of subline drawn near text.
-- @field x_offset (number)
--   The horizontal scroll position.
--   A value of `0` is the normal position with the first text column visible at
--   the left of the view.
-- @field zoom (number)
--   The number of points added to the size of all fonts.
--   It may be positive to magnify or negative to reduce.
module('buffer')

---
-- Add a selection from anchor to caret as the main selection.
-- Retainings all other selections as additional selections. Since there is
-- always at least one selection, to set a list of selections, the first
-- selection should be added with `buffer:set_selection()` and later selections
-- added with this function.
-- @param buffer The global buffer.
-- @param caret The caret.
-- @param anchor The anchor.
function buffer.add_selection(buffer, caret, anchor) end

---
-- Add text to the document at current position.
-- The current position is set at the end of the inserted text, but it is not
-- scrolled into view.
-- @param buffer The global buffer.
-- @param text The text to add.
function buffer.add_text(buffer, text) end

---
-- Enlarge the document to a particular size of text bytes.
-- The document will not be made smaller than its current contents.
-- @param buffer The global buffer.
-- @param bytes
function buffer.allocate(buffer, bytes) end

---
-- Clear the annotations from all lines.
-- @param buffer The global buffer.
function buffer.annotation_clear_all(buffer) end

---
-- Get the annotation text for a line.
-- @param buffer The global buffer.
-- @param line The line number.
-- @return string
function buffer.annotation_get_text(buffer, line) end

---
-- Set the annotation text for a line.
-- @param buffer The global buffer.
-- @param line The line number.
-- @param text The text.
function buffer.annotation_set_text(buffer, line, text) end

---
-- Append a string to the end of the document without changing the selection.
-- The current selection is not changed and the new text is not scrolled into
-- view.
-- @param buffer The global buffer.
-- @param text The text.
function buffer.append_text(buffer, text) end

---
-- Is there an auto-completion list visible?
-- @param buffer
-- @return bool
function buffer.auto_c_active(buffer) end

---
-- Remove the auto-completion list from the screen.
-- A set of characters that will cancel autocompletion can be specified with
-- `buffer:auto_c_stops()`.
-- @param buffer The global buffer.
function buffer.auto_c_cancel(buffer) end

---
-- User has selected an item so remove the list and insert the selection.
-- This has the same effect as the tab key.
-- @param buffer The global buffer.
function buffer.auto_c_complete(buffer) end

---
-- Get currently selected item position in the auto-completion list.
-- @param buffer The global buffer.
-- @return number
function buffer.auto_c_get_current(buffer) end

---
-- Get currently selected item text in the auto-completion list.
-- @param buffer The global buffer.
-- @return string
function buffer.auto_c_get_current_text(buffer) end

---
-- Retrieve the position of the caret when the auto-completion list was
-- displayed.
-- @param buffer The global buffer.
-- @return number
function buffer.auto_c_pos_start(buffer) end

---
-- Select the item in the auto-completion list that starts with a string.
-- By default, comparisons are case sensitive, but this can change with
-- `buffer.auto_c_ignore_case`.
-- @param buffer The global buffer.
-- @param string
function buffer.auto_c_select(buffer, string) end

---
-- Display an auto-completion list.
-- @param len_entered The number of characters before the caret used to provide
--   the context.
-- @param item_list List of words separated by separator characters (initially
--   spaces). The list of words should be in sorted order.
function buffer.auto_c_show(buffer, len_entered, item_list) end

---
-- Define a set of characters that when typed cancel the auto-completion list.
-- @param buffer The global buffer.
-- @param chars String list of characters. This list is empty by default.
function buffer.auto_c_stops(buffer, chars) end

---
-- Dedent the selected lines.
-- @param buffer The global buffer.
function buffer.back_tab(buffer) end

---
-- Start a sequence of actions that is undone and redone as a unit.
-- May be nested.
-- @param buffer The global buffer.
function buffer.begin_undo_action(buffer) end

---
-- Highlight the character at a position indicating there is no matching brace.
-- @param buffer The global buffer.
-- @param pos The position or -1 to remove the highlight.
function buffer.brace_bad_light(buffer, pos) end

---
-- Use specified indicator to highlight non matching brace instead of changing
-- its style.
-- @param buffer The global buffer.
-- @param use_indicator Use an indicator.
-- @param indic_num The indicator number.
function buffer.brace_bad_light_indicator(buffer, use_indicator, indic_num) end

---
-- Highlight the characters at two positions.
-- If indent guides are enabled, the indent that corresponds with the brace can
-- be highlighted by locating the column with `buffer.column` and highlight the
-- indent with `buffer.highlight_guide`.
-- @param buffer The global buffer.
-- @param pos1 The first position.
-- @param pos2 The second position.
function buffer.brace_highlight(buffer, pos1, pos2) end

---
-- Use specified indicator to highlight matching braces instead of changing
-- their style.
-- @param buffer The global buffer.
-- @param use_indicator Use an indicator.
-- @param indic_num The indicator number.
function buffer.brace_highlight_indicator(buffer, use_indicator, indic_num) end

---
-- Find the position of a matching brace or `-1` if no match.
-- The brace characters handled are `(`, `)`, `[`, `]`, `{`, `}`, `<`, and `>`.
-- The search is forwards from an opening brace and backwards from a closing
-- brace. A match only occurs if the style of the matching brace is the same as
-- the starting brace or the matching brace is beyond the end of styling. Nested
-- braces are handled correctly.
-- @param buffer The global buffer.
-- @param pos The position.
-- @return number.
function buffer.brace_match(buffer, pos) end

---
-- Is there an active call tip?
-- @param buffer The global buffer.
-- @return bool
function buffer.call_tip_active(buffer) end

---
-- Remove the call tip from the screen.
-- Call tips are also removed if any keyboard commands that are not compatible
-- with editing the argument list of a function are used.
-- @param buffer The global buffer.
function buffer.call_tip_cancel(buffer) end

---
-- Retrieve the position where the caret was before displaying the call tip.
-- @param buffer The global buffer.
-- @return number
function buffer.call_tip_pos_start(buffer) end

---
-- Highlights a segment of a call tip.
-- @param buffer The global buffer.
-- @param start_pos The start position.
-- @param end_pos The end position.
function buffer.call_tip_set_hlt(buffer, start_pos, end_pos) end

---
-- Show a call tip containing a definition near position pos.
-- The call tip text is aligned to start 1 line below this character unless up
-- and/or down arrows have been included in the call tip text in which case the
-- tip is aligned to the right-hand edge of the rightmost arrow. The assumption
-- is that the text starts with something like `"\001 1 of 3 \002"`.
-- @param buffer The global buffer.
-- @param pos The position.
-- @param text The text.
function buffer.call_tip_show(buffer, pos, text) end

---
-- Will a paste succeed?
-- @param buffer The global buffer.
-- @return bool
function buffer.can_paste(buffer) end

---
-- Are there any redoable actions in the undo history?
-- @param buffer The global buffer.
-- @return bool
function buffer.can_redo(buffer) end

---
-- Are there any undoable actions in the undo history?
-- @param buffer The global buffer.
-- @return bool
function buffer.can_undo(buffer) end

---
-- Cancel any modes such as call tip or auto-completion list display.
-- @param buffer The global buffer.
function buffer.cancel(buffer) end

---
-- Indicate that the internal state of a lexer has changed over a range and
-- therefore there may be a need to redraw.
-- @param buffer The global buffer.
-- @param start_pos The start position.
-- @param end_pos The end position.
function buffer.change_lexer_state(buffer, start_pos, end_pos) end

---
-- Move caret left one character.
-- @param buffer The global buffer.
function buffer.char_left(buffer) end

---
-- Move caret left one character extending selection to new caret position.
-- @param buffer The global buffer.
function buffer.char_left_extend(buffer) end

---
-- Move caret left one character, extending rectangular selection to new caret
-- position.
-- @param buffer The global buffer.
function buffer.char_left_rect_extend(buffer) end

---
-- Find the position of a character from a point within the window.
-- @param buffer The global buffer.
-- @param x
-- @param y
-- @return number
function buffer.char_position_from_point(buffer, x, y) end

---
-- Find the position of a character from a point within the window.
-- Return `-1` if not close to text.
-- @param buffer The global buffer.
-- @param x
-- @param y
-- @return number
function buffer.char_position_from_point_close(buffer, x, y) end

---
-- Move caret right one character.
-- @param buffer The global buffer.
function buffer.char_right(buffer) end

---
-- Move caret right one character extending selection to new caret position.
-- @param buffer The global buffer.
function buffer.char_right_extend(buffer) end

---
-- Move caret right one character, extending rectangular selection to new caret
-- position.
-- @param buffer The global buffer.
function buffer.char_right_rect_extend(buffer) end

---
-- Set the last x chosen value to be the caret x position.
-- The view remembers the x value of the last position horizontally moved to
-- explicitly by the user and this value is then used when moving vertically
-- such as by using the up and down keys. This function sets the current x
-- position of the caret as the remembered value.
-- @param buffer The global buffer.
function buffer.choose_caret_x(buffer) end

---
-- Clear the selection.
-- @param buffer The global buffer.
function buffer.clear(buffer) end

---
-- Delete all text in the document.
-- @param buffer The global buffer.
function buffer.clear_all(buffer) end

---
-- Drop all key mappings.
-- @param buffer The global buffer.
function buffer.clear_all_cmd_keys(buffer) end

---
-- Set all style bytes to `0`, remove all folding information.
-- @param buffer The global buffer.
function buffer.clear_document_style(buffer) end

---
-- Clear all the registered XPM images.
-- @param buffer The global buffer.
function buffer.clear_registered_images(buffer) end

---
-- Clear selections to a single empty stream selection.
-- @param buffer The global buffer.
function buffer.clear_selections(buffer) end

---
-- Colorise a segment of the document using the current lexing language.
-- @param buffer The global buffer.
-- @param start_pos The start position.
-- @param end_pos The end position or `-1` to style from `start_pos` to the end
--   of the document.
function buffer.colourise(buffer, start_pos, end_pos) end

---
-- Find the next line at or after line_start that is a contracted fold header
-- line.
-- Return `-1` when no more lines.
-- @param buffer The global buffer.
-- @param line_start The start line number.
-- @return number
function buffer.contracted_fold_next(buffer, line_start) end

---
-- Converts all line endings in the document to one mode.
-- @param buffer The global buffer.
-- @param mode The line ending mode. Valid values are:
--   `_SCINTILLA.constants.SC_EOL_CRLF` (0),
--   `_SCINTILLA.constants.SC_EOL_CR (1)`, or
--   `_SCINTILLA.constants.SC_EOL_LF (2)`.
function buffer.convert_eo_ls(buffer, mode) end

---
-- Copy the selection to the clipboard.
-- @param buffer The buffer
function buffer.copy(buffer) end

---
-- Copy the selection, if selection empty copy the line with the caret.
-- @param buffer The global buffer.
function buffer.copy_allow_line(buffer) end

---
-- Copy a range of text to the clipboard. Positions are clipped into the
-- document.
-- @param buffer The global buffer.
-- @param start_pos The start position.
-- @param end_pos The end position.
function buffer.copy_range(buffer, start_pos, end_pos) end

---
-- Copy argument text to the clipboard.
-- @param buffer The global buffer.
-- @param text The text.
function buffer.copy_text(buffer, text) end

---
-- Count characters between two positions.
-- @param start_pos
-- @param end_pos
-- @return number
function buffer.count_characters(buffer, start_pos, end_pos) end

---
-- Cut the selection to the clipboard.
-- @param buffer The global buffer.
function buffer.cut(buffer) end

---
-- Delete back from the current position to the start of the line.
-- @param buffer The global buffer.
function buffer.del_line_left(buffer) end

---
-- Delete forwards from the current position to the end of the line.
-- @param buffer The global buffer.
function buffer.del_line_right(buffer) end

---
-- Delete the word to the left of the caret.
-- @param buffer The global buffer.
function buffer.del_word_left(buffer) end

---
-- Delete the word to the right of the caret.
-- @param buffer The global buffer.
function buffer.del_word_right(buffer) end

---
-- Delete the word to the right of the caret, but not the trailing non-word
-- characters.
-- @param buffer The global buffer.
function buffer.del_word_right_end(buffer) end

---
-- Delete the selection or if no selection, the character before the caret.
-- @param buffer The global buffer.
function buffer.delete_back(buffer) end

---
-- Delete the selection or if no selection, the character before the caret.
-- Will not delete the character before at the start of a line.
function buffer.delete_back_not_line(buffer) end

---
-- Find the document line of a display line taking hidden lines into account.
-- @param buffer The global buffer.
-- @return number
function buffer.doc_line_from_visible(buffer) end

---
-- Move caret to last position in document.
-- @param buffer The global buffer.
function buffer.document_end(buffer) end

---
-- Move caret to last position in document extending selection to new caret
-- position.
-- @param buffer The global buffer.
function buffer.document_end_extend(buffer) end

---
-- Move caret to first position in document.
-- @param buffer The global buffer.
function buffer.document_start(buffer) end

---
-- Move caret to first position in document extending selection to new caret
-- position.
-- @param buffer The global buffer.
function buffer.document_start_extend(buffer) end

---
-- Switch from insert to overtype mode or the reverse.
-- @param buffer The global buffer.
function buffer.edit_toggle_overtype(buffer) end

---
-- Delete the undo history.
-- It also sets the save point to the start of the undo buffer, so the document
-- will appear to be unmodified.
-- @param buffer The global buffer.
function buffer.empty_undo_buffer(buffer) end

---
-- Translates a UTF8 string into the document encoding.
-- Return the length of the result in bytes. On error return `0`.
-- @param buffer The global buffer.
-- @param string The string.
-- @return number
function buffer.encoded_from_utf8(buffer, string) end

---
-- End a sequence of actions that is undone and redone as a unit.
-- @param buffer The global buffer.
function buffer.end_undo_action(buffer) end

---
-- Ensure a particular line is visible by expanding any header line hiding it.
-- @param buffer The global buffer.
-- @param line The line number.
function buffer.ensure_visible(buffer, line) end

---
-- Ensure a particular line is visible by expanding any header line hiding it.
-- Use the currently set visibility policy to determine which range to display.
-- @param buffer The global buffer.
-- @param line The line number.
function buffer.ensure_visible_enforce_policy(buffer, line) end

---
-- Find the position of a column on a line taking into account tabs and
-- multi-byte characters.
-- If beyond end of line, return line end position.
-- @param buffer The global buffer.
-- @param line The line number.
-- @param column The column number.
function buffer.find_column(buffer, line, column) end

---
-- Insert a Form Feed character.
-- @param buffer The global buffer.
function buffer.form_feed(buffer) end

---
-- Retrieve the text of the line containing the caret.
-- Also returns the index of the caret on the line.
-- @param buffer The global buffer.
-- @return string, number
function buffer.get_cur_line(buffer) end

---
-- Get the back color for active hotspots in 0xBBGGRR format.
-- @param buffer The global buffer.
-- @return number
function buffer.get_hotspot_active_back(buffer) end

---
-- Get the fore color for active hotspots.
-- @param buffer The global buffer.
-- @return number
function buffer.get_hotspot_active_fore(buffer) end

---
-- Find the last child line of a header line.
-- @param buffer The global buffer.
-- @param header_line The line number of a header line.
-- @param level The level or `-1` for the level of header_line.
function buffer.get_last_child(buffer, header_line, level) end

---
-- Retrieve the name of the lexer.
-- @param buffer The global buffer.
function buffer.get_lexer_language(buffer) end

---
-- Retrieve the contents of a line.
-- Also returns the length of the line.
-- @param buffer The global buffer.
-- @param line The line number.
-- @return string, number
function buffer.get_line(buffer, line) end

---
-- Retrieve the position of the end of the selection at the given line (`-1` if
-- no selection on this line).
-- @param buffer The global buffer.
-- @param line The line number.
function buffer.get_line_sel_end_position(buffer, line) end

---
-- Retrieve the position of the start of the selection at the given line (`-1`
-- if no selection on this line).
-- @param buffer The global buffer.
-- @param line The line number.
function buffer.get_line_sel_start_position(buffer, line) end

---
-- Retrieve a `property` value previously set with `buffer.property`.
-- @param buffer The global buffer.
-- @param key Keyword.
-- @return string
function buffer.get_property(buffer, key) end

---
-- Retrieve a `property` value previously set with `buffer.property`, with `$()`
-- variable replacement on returned buffer.
-- @param buffer The global buffer.
-- @param key Keyword.
-- @return string
function buffer.get_property_expanded(buffer, key) end

---
-- Retrieve the selected text.
-- Also returns the length of the text.
-- @param buffer The global buffer.
-- @return string, number
function buffer.get_sel_text(buffer) end

---
-- Retrieve the value of a tag from a regular expression search.
-- @param buffer The global buffer.
-- @param tag_num The tag number.
-- @return string
function buffer.get_tag(buffer, tag_num) end

---
-- Retrieve all the text in the document.
-- Also returns number of characters retrieved.
-- @param buffer The global buffer.
function buffer.get_text(buffer) end

---
-- Set caret to start of a line and ensure it is visible.
-- @param buffer The global buffer.
-- @param line The line number.
function buffer.goto_line(buffer, line) end

---
-- Set caret to a position and ensure it is visible.
-- The anchor position is set the same as the current position.
-- @param buffer The global buffer.
-- @param pos The position.
function buffer.goto_pos(buffer, pos) end

---
-- Set the focus to this view.
-- @param buffer The global buffer.
function buffer.grab_focus(buffer) end

---
-- Make a range of lines invisible.
-- This has no effect on fold levels or fold flags. `start_line` can not be
-- hidden.
-- @param buffer The global buffer.
-- @param start_line The start line.
-- @param end_line The end line.
function buffer.hide_lines(buffer, start_line, end_line) end

---
-- Draw the selection in normal style or with selection highlighted.
-- @param buffer The global buffer.
-- @param normal Draw normal selection.
function buffer.hide_selection(buffer, normal) end

---
-- Move caret to first position on line.
-- @param buffer The global buffer.
function buffer.home(buffer) end

---
-- Move caret to first position on display line.
-- @param buffer The global buffer.
function buffer.home_display(buffer) end

---
-- Move caret to first position on display line extending selection to new caret
-- position.
-- @param buffer The global buffer.
function buffer.home_display_extend(buffer) end

---
-- Move caret to first position on line extending selection to new caret
-- position.
-- @param buffer The global buffer.
function buffer.home_extend(buffer) end

---
-- Move caret to first position on line, extending rectangular selection to new
-- caret position.
-- @param buffer The global buffer.
function buffer.home_rect_extend(buffer) end

---
-- Move caret to the start of the display line when word-wrap is enabled.
-- If already there, go to the start of the document line.
-- @param buffer The global buffer.
function buffer.home_wrap(buffer) end

---
-- Like `buffer:home_wrap()` but extending selection to new caret position.
-- @param buffer The global buffer.
function buffer.home_wrap_extend(buffer) end

---
-- Retrieve a bitmap value representing which indicators are non-zero at a
-- position.
-- Bit 0 is set if indicator 0 is present, bit 1 for indicator 1 and so on.
-- @param buffer The global buffer.
-- @param pos The position.
-- @return number
function buffer.indicator_all_on_for(buffer, pos) end

---
-- Turn a indicator off over a range.
-- @param buffer The global buffer.
-- @param pos The start position.
-- @param clear_length The length.
function buffer.indicator_clear_range(buffer, pos, clear_length) end

---
-- Find the position where a particular indicator ends.
-- @param buffer The global buffer.
-- @param indicator An indicator number in the range of `0` to `31`.
-- @param pos The position of the indicator.
function buffer.indicator_end(buffer, indicator, pos) end

---
-- Turn a indicator on over a range.
-- This function fills with the current indicator value.
-- @param buffer The global buffer.
-- @param pos the start position.
-- @param fill_length The length.
function buffer.indicator_fill_range(buffer, pos, fill_length) end

---
-- Find the position where a particular indicator starts.
-- @param buffer The global buffer.
-- @param indicator An indicator number in the range of `0` to `31`.
-- @param pos The position of the indicator.
function buffer.indicator_start(buffer, indicator, pos) end

---
-- Retrieve the value of a particular indicator at a position.
-- Currently all values are drawn the same.
-- @param buffer The global buffer.
-- @param indicator The indicator number in the range of `0` to `31`.
-- @param pos The position.
-- @return number
function buffer.indicator_value_at(buffer, indicator, pos) end

---
-- Insert string at a position.
-- If the current position is after the insertion point then it is moved along
-- with its surrounding text but no scrolling is performed.
-- @param buffer The global buffer.
-- @param pos The position to insert text at or `-1` for the current position.
-- @param text The text to insert.
function buffer.insert_text(buffer, pos, text) end

---
-- Copy the line containing the caret.
-- @param buffer The global buffer.
function buffer.line_copy(buffer) end

---
-- Cut the line containing the caret.
-- @param buffer The global buffer.
function buffer.line_cut(buffer) end

---
-- Delete the line containing the caret.
-- @param buffer The global buffer.
function buffer.line_delete(buffer) end

---
-- Move caret down one line.
-- @param buffer The global buffer.
function buffer.line_down(buffer) end

---
-- Move caret down one line extending selection to new caret position.
-- @param buffer The global buffer.
function buffer.line_down_extend(buffer) end

---
-- Move caret down one line, extending rectangular selection to new caret
-- position.
-- @param buffer The global buffer.
function buffer.line_down_rect_extend(buffer) end

---
-- Duplicate the current line.
-- @param buffer The global buffer.
function buffer.line_duplicate(buffer) end

---
-- Move caret to last position on line.
-- @param buffer The global buffer.
function buffer.line_end(buffer) end

---
-- Move caret to last position on display line.
-- @param buffer The global buffer.
function buffer.line_end_display(buffer) end

---
-- Move caret to last position on display line extending selection to new caret
-- position.
-- @param buffer The global buffer.
function buffer.line_end_display_extend(buffer) end

---
-- Move caret to last position on line extending selection to new caret
-- position.
-- @param buffer The global buffer.
function buffer.line_end_extend(buffer) end

---
-- Move caret to last position on line, extending rectangular selection to new
-- caret position.
-- @param buffer The global buffer.
function buffer.line_end_rect_extend(buffer) end

---
-- Move caret to the end of the display line when word-wrap is enabled.
-- If already there, go to the end of the document line.
-- @param buffer The global buffer.
function buffer.line_end_wrap(buffer) end

---
-- Like `buffer:line_end_wrap()` but extending selection to new caret position.
-- @param buffer The global buffer.
function buffer.line_end_wrap_extend(buffer) end

---
-- Retrieve the line containing a position.
-- @param buffer The global buffer.
-- @param pos The position.
-- @return number
function buffer.line_from_position(buffer, pos) end

---
-- Returns how many characters are on a line, including end of line characters.
-- To get the length of the line not including any end of line characters, use
-- `buffer.line_end_position[line] - buffer:position_from_line(line)`.
-- @param buffer The global buffer.
-- @param line The line number.
-- @return number
function buffer.line_length(buffer, line) end

---
-- Scroll horizontally and vertically.
-- @param buffer The global buffer.
-- @param columns The number of columns to scroll horizontally.
-- @param lines The number of lines to scroll vertically.
function buffer.line_scroll(buffer, columns, lines) end

---
-- Scroll the document down, keeping the caret visible.
-- @param buffer The global buffer.
function buffer.line_scroll_down(buffer) end

---
-- Scroll the document up, keeping the caret visible.
-- @param buffer The global buffer.
function buffer.line_scroll_up(buffer) end

---
-- Switch the current line with the previous.
-- @param buffer The global buffer.
function buffer.line_transpose(buffer) end

---
-- Move caret up one line.
-- @param buffer The global buffer.
function buffer.line_up(buffer) end

---
-- Move caret up one line extending selection to new caret position.
-- @param buffer The global buffer.
function buffer.line_up_extend(buffer) end

---
-- Move caret up one line, extending rectangular selection to new caret
-- position.
-- @param buffer The global buffer.
function buffer.line_up_rect_extend(buffer) end

---
-- Join the lines in the target.
-- Where this would lead to no space between words, an extra space is inserted.
-- @param buffer The global buffer.
function buffer.lines_join(buffer) end

---
-- Split the lines in the target into lines that are less wide than
-- `pixel_width` where possible.
-- @param buffer The global buffer.
-- @param pixel_width The pixel width. When `0`, the width of the view is used.
function buffer.lines_split(buffer, pixel_width) end

---
-- Transform the selection to lower case.
-- @param buffer The global buffer.
function buffer.lower_case(buffer) end

---
-- Get the text in the text margin for a line.
-- @param buffer The global buffer.
-- @param line The line number.
-- @return string
function buffer.margin_get_text(buffer, line) end

---
-- Set the text in the text margin for a line.
-- @param buffer The global buffer.
-- @param line The line number.
-- @param text The text.
function buffer.margin_set_text(buffer, line, text) end

---
-- Clear the margin text on all lines.
-- @param buffer The global buffer.
function buffer.margin_text_clear_all(buffer) end

---
-- Add a marker to a line, returning an ID which can be used to find or delete
-- the marker.
-- Returns `-1` if this fails (illegal line number, out of memory).
-- @param buffer The global buffer.
-- @param line The line number.
-- @param marker_num A marker number in the range of `0` to `31`.
-- @return number
function buffer.marker_add(buffer, line, marker_num) end

---
-- Add a set of markers to a line.
-- @param buffer The global buffer.
-- @param line The line number.
-- @param marker_mask A mask of markers to set. Set bit 0 to set marker 0, bit
--   1 for marker 1 and so on.
function buffer.marker_add_set(buffer, line, marker_mask) end

---
-- Set the symbol used for a particular marker number.
-- @param buffer The global buffer.
-- @param marker_num A marker number in the range of `0` to `31`.
-- @param marker_symbol A marker symbol: `_SCINTILLA.constants.SC_MARK_*`.
-- @see _SCINTILLA.next_marker_number
function buffer.marker_define(buffer, marker_num, marker_symbol) end

---
-- Define a marker from a pixmap.
-- @param buffer The global buffer.
-- @param marker_num A marker number in the range of `0` to `31`.
-- @param pixmap `NULL`-terminated pixmap data.
function buffer.marker_define_pixmap(buffer, marker_num, pixmap) end

---
-- Define a marker from RGBA data.
-- It has the width and height from `buffer.rgba_image_width` and
-- `buffer.rgba_image_height`.
-- @param buffer The global buffer.
-- @param marker_num A marker number in the range of `0` to `31`.
-- @param pixels A sequence of 4 byte pixel values starting with the pixels for
--   the top line, with the leftmost pixel first, then continuing with the
--   pixels for subsequent lines. There is no gap between lines for alignment
--   reasons. Each pixel consists of, in order, a red byte, a green byte, a blue
--   byte and an alpha byte. The colour bytes are not premultiplied by the alpha
--   value. That is, a fully red pixel that is 25% opaque will be `[FF, 00, 00,
--   3F]`.
function buffer.marker_define_rgba_image(buffer, marker_num, pixels) end

---
-- Delete a marker from a line.
-- @param buffer The global buffer.
-- @param line The line number.
-- @param marker_num A marker number in the range of `0` to `31` or `-1` to
--   delete all markers from the line.
function buffer.marker_delete(buffer, line, marker_num) end

---
-- Delete all markers with a particular number from all lines.
-- @param buffer The global buffer.
-- @param marker_num A marker number in the range of `0` to `31` or `-1` to
--   delete all markers from the line.
function buffer.marker_delete_all(buffer, marker_num) end

---
-- Delete a marker.
-- @param buffer The global buffer.
-- @param handle The identifier of a marker returned by `buffer:marker_add()`.
function buffer.marker_delete_handle(buffer, handle) end

---
-- Enable/disable highlight for current folding block (smallest one that
-- contains the caret)
-- @param buffer The global buffer.
-- @param enabled
function buffer.marker_enable_highlight(buffer, enabled) end

---
-- Get a bit mask of all the markers set on a line.
-- Bit 0 is set if marker 0 is present, bit 1 for marker 1 and so on.
-- @param buffer The global buffer.
-- @param line The line number.
-- @return number.
function buffer.marker_get(buffer, line) end

---
-- Retrieve the line number at which a particular marker is located.
-- Returns `-1` if it not found.
-- @param buffer The global buffer.
-- @param handle The identifier of a marker returned by `buffer:marker_add()`.
-- @return number
function buffer.marker_line_from_handle(buffer, handle) end

---
-- Find the next line at or after start_line that includes a marker in mask.
-- Return `-1` when no more lines.
-- @param buffer The global buffer.
-- @param start_line The start line.
-- @param marker_mask A mask of markers to find. Set bit 0 to find marker 0, bit
--   1 for marker 1 and so on.
-- @return number
function buffer.marker_next(buffer, start_line, marker_mask) end

---
-- Find the previous line before `start_line` that includes a marker in mask.
-- @param buffer The global buffer.
-- @param start_line The start line.
-- @param marker_mask A mask of markers to find. Set bit 0 to find marker 0, bit
--   1 for marker 1 and so on.
-- @return number
function buffer.marker_previous(buffer, start_line, marker_mask) end

---
-- Set the alpha used for a marker that is drawn in the text area, not the
-- margin.
-- @param buffer The global buffer.
-- @param marker_num A marker number in the range of `0` to `31`.
-- @param alpha An alpha value between `0` (transparent) and `255` (opaque), or
--   `256` for no alpha.
function buffer.marker_set_alpha(buffer, marker_num, alpha) end

---
-- Set the background color used for a particular marker number.
-- @param buffer The global buffer.
-- @param marker_num A marker number in the range of `0` to `31`.
-- @param color A color in `0xBBGGRR` format.
function buffer.marker_set_back(buffer, marker_num, color) end

---
-- Set the background color used for a particular marker number when its
-- folding block is selected.
-- @param buffer The global buffer.
-- @param marker_num A marker number in the range of `0` to `31`.
-- @param color A color in `0xBBGGRR` format. The default color is `#FF0000`.
function buffer.marker_set_back_selected(buffer, marker_num, color) end

---
-- Set the foreground color used for a particular marker number.
-- @param buffer The global buffer.
-- @param marker_num A marker number in the range of `0` to `31`.
-- @param color A color in `0xBBGGRR` format.
function buffer.marker_set_fore(buffer, marker_num, color) end

---
-- Return the symbol defined for marker_num with `buffer:marker_define()`.
-- @param buffer The global buffer.
-- @param marker_num A marker number in the range of `0` to `31`.
-- @return number
function buffer.marker_symbol_defined(buffer, marker_num) end

---
-- Move the caret inside current view if it is not there already.
-- Any selection is lost.
-- @param buffer The global buffer.
function buffer.move_caret_inside_view(buffer) end

---
-- Move the selected lines down one line, shifting the line below before the
-- selection.
-- The selection will be automatically extended to the beginning of the
-- selection's first line and the end of the seletion's last line. If nothing
-- was selected, the line the cursor is currently at will be selected.
-- @param buffer The global buffer.
function buffer.move_selected_lines_down(buffer) end

---
-- Move the selected lines up one line, shifting the line above after the
-- selection.
-- The selection will be automatically extended to the beginning of the
-- selection's first line and the end of the seletion's last line. If nothing
-- was selected, the line the cursor is currently at will be selected.
-- @param buffer The global buffer.
function buffer.move_selected_lines_up(buffer) end

---
-- Insert a new line, may use a CRLF, CR or LF depending on EOL mode.
-- @param buffer The global buffer.
function buffer.new_line(buffer) end

---
-- Move caret one page down.
-- @param buffer The global buffer.
function buffer.page_down(buffer) end

---
-- Move caret one page down extending selection to new caret position.
-- @param buffer The global buffer.
function buffer.page_down_extend(buffer) end

---
-- Move caret one page down, extending rectangular selection to new caret
-- position.
-- @param buffer The global buffer.
function buffer.page_down_rect_extend(buffer) end

---
-- Move caret one page up.
-- @param buffer The global buffer.
function buffer.page_up(buffer) end

---
-- Move caret one page up extending selection to new caret position.
-- @param buffer The global buffer.
function buffer.page_up_extend(buffer) end

---
-- Move caret one page up, extending rectangular selection to new caret
-- position.
-- @param buffer The global buffer.
function buffer.page_up_rect_extend(buffer) end

---
-- Move caret one paragraph down (delimited by empty lines).
-- @param buffer The global buffer.
function buffer.para_down(buffer) end

---
-- Move caret one paragraph down (delimited by empty lines) extending selection
-- to new caret position.
-- @param buffer The global buffer.
function buffer.para_down_extend(buffer) end

---
-- Move caret one paragraph up (delimited by empty lines).
-- @param buffer The global buffer.
function buffer.para_up(buffer) end

---
-- Move caret one paragraph up (delimited by empty lines) extending selection to
-- new caret position.
-- @param buffer The global buffer.
function buffer.para_up_extend(buffer) end

---
-- Paste the contents of the clipboard into the document replacing the
-- selection.
-- @param buffer The global buffer.
function buffer.paste(buffer) end

---
-- For private communication between an application and a known lexer.
-- @param buffer The global buffer.
-- @param operation An operation number.
-- @param data Number data.
function buffer.private_lexer_call(buffer, operation, data) end

---
-- Retrieve the x value of the point in the window where a position is
-- displayed.
-- @param buffer The global buffer.
-- @param pos The position.
-- @return number
function buffer.point_x_from_position(buffer, pos) end

---
-- Retrieve the y value of the point in the window where a position is
-- displayed.
-- @param buffer The global buffer.
-- @param pos The position.
-- @return number
function buffer.point_y_from_position(buffer, pos) end

---
-- Given a valid document position, return the next position taking code page
-- into account. Maximum value returned is the last position in the document.
-- @param buffer The global buffer.
-- @param pos The position.
function buffer.position_after(buffer, pos) end

---
-- Given a valid document position, return the previous position taking code
-- page into account. Returns `0` if passed `0`.
-- @param buffer The global buffer.
-- @param pos The position.
-- @return number
function buffer.position_before(buffer, pos) end

---
-- Retrieve the position at the start of a line.
-- If line is greater than the lines in the document, returns `-1`.
-- @param buffer The global buffer.
-- @param line The line.
-- @return number
function buffer.position_from_line(buffer, line) end

---
-- Find the position from a point within the window.
-- @param buffer The global buffer.
-- @param x
-- @param y
-- @return number
function buffer.position_from_point(buffer, x, y) end

---
-- Returns the position from a point within the window, but return `-1` if not
-- close to text.
-- @param buffer The global buffer.
-- @param x
-- @param y
-- @return number
function buffer.position_from_point_close(buffer, x, y) end

---
-- Redoes the next action on the undo history.
-- @param buffer The global buffer.
function buffer.redo(buffer) end

---
-- Register an XPM image for use in autocompletion lists.
-- @param buffer The global buffer.
-- @param type Integer type to register the image with.
-- @param xpm_data XPM data as is described for `buffer:marker_define_pixmap()`.
function buffer.register_image(buffer, type, xpm_data) end

---
-- Register an RGBA image for use in autocompletion lists.
-- It has the width and height from `buffer.rgba_image_width` and
-- `buffer.rgba_image_height`.
-- @param buffer The global buffer.
-- @param type Integer type to register the image with.
-- @param pixels RGBA data as is described for
--   `buffer:marker_define_rgba_image()`.
function buffer.register_rgba_image(buffer, type, pixels) end

---
-- Replace the selected text with the argument text.
-- The caret is positioned after the inserted text and the caret is scrolled
-- into view.
-- @param buffer The global buffer.
-- @param text The text.
function buffer.replace_sel(buffer, text) end

---
-- Replace the target text with the argument text.
-- After replacement, the target range refers to the replacement text.
-- Returns the length of the replacement text.
-- @param buffer The global buffer.
-- @param text The text (can contain NULs).
-- @return number
function buffer.replace_target(buffer, text) end

---
-- Replace the target text with the argument text after `\d` processing.
-- Looks for `\d` where `d` is between `1` and `9` and replaces these with the
-- strings matched in the last search operation which were surrounded by `\(`
-- and `\)`. Returns the length of the replacement text including any change
-- caused by processing the `\d` patterns.
-- @param buffer The global buffer.
-- @param text The text (can contain NULs).
-- @return number
function buffer.replace_target_re(buffer, text) end

---
-- Set the main selection to the next selection.
-- @param buffer The global buffer.
function buffer.rotate_selection(buffer) end

---
-- Ensure the caret is visible.
-- @param buffer The global buffer.
function buffer.scroll_caret(buffer) end

---
-- Scroll to end of document.
-- @param buffer The global buffer.
function buffer.scroll_to_end(buffer) end

---
-- Scroll to start of document.
-- @param buffer The global buffer.
function buffer.scroll_to_start(buffer) end

---
-- Sets the current caret position to be the search anchor.
-- Always call this before calling either of `buffer:search_next()` or
-- `buffer:search_prev()`.
-- @param buffer The global buffer.
function buffer.search_anchor(buffer) end

---
-- Search for a counted string in the target and set the target to the found
-- range.
-- Returns length of range or `-1` for failure in which case target is not
-- moved.
-- @param buffer The global buffer.
-- @param text The text (can contain NULs).
-- @return number
function buffer.search_in_target(buffer, text) end

---
-- Find some text starting at the search anchor.
-- The return value is `-1` if nothing is found, otherwise the return value is
-- the start position of the matching text. The selection is updated to show the
-- matched text, but is not scrolled into view.
-- @param buffer The global buffer.
-- @param flags Search flags. See `buffer.search_flags`.
-- @param text The text.
-- @return number
function buffer.search_next(buffer, flags, text) end

---
-- Find some text starting at the search anchor and moving backwards.
-- The return value is `-1` if nothing is found, otherwise the return value is
-- the start position of the matching text. The selection is updated to show the
-- matched text, but is not scrolled into view.
-- @param buffer The global buffer.
-- @param flags Search flags. See `buffer.search_flags`.
-- @param text The text.
-- @return number
function buffer.search_prev(buffer, flags, text) end

---
-- Select all the text in the document.
-- The current position is not scrolled into view.
-- @param buffer The global buffer.
function buffer.select_all(buffer) end

---
-- Duplicate the selection.
-- If selection empty duplicate the line containing the caret.
-- @param buffer The global buffer.
function buffer.selection_duplicate(buffer) end

---
-- Reset the set of characters for whitespace and word characters to the
-- defaults.
-- This sets whitespace to space, tab and other characters with codes less than
-- `0x20`, with word characters set to alphanumeric and `'_'`.
-- @param buffer The global buffer.
function buffer.set_chars_default(buffer) end

---
-- Set caret to a position, while removing any existing selection.
-- The caret is not scrolled into view.
-- @param buffer The buffer
-- @param pos The position to move to.
function buffer.set_empty_selection(buffer, pos) end

---
-- Set some style options for folding.
-- @param buffer The global buffer.
-- @param flags Mask of fold flags. Flags available are
--   `_SCINTILLA.constants.SC_FOLDFLAG_LINEBEFORE_EXPANDED` (2): Draw above if
--   expanded; `_SCINTILLA.constants.SC_FOLDFLAG_LINEBEFORE_CONTRACTED` (4):
--   Draw above if not expanded;
--   `_SCINTILLA.constants.SC_FOLDFLAG_LINEAFTER_EXPANDED` (8): Draw below if
--   expanded; `_SCINTILLA.constants.SC_FOLDFLAG_LINEAFTER_CONTRACTED` (16):
--   Draw below if not expanded
function buffer.set_fold_flags(buffer, flags) end

---
-- Set the colors used as a chequerboard pattern in the fold margin.
-- @param buffer The global buffer.
-- @param use_setting Enable color change.
-- @param color A color in `0xBBGGRR` format.
function buffer.set_fold_margin_colour(buffer, use_setting, color) end

---
-- Set the colors used as a checkerboard pattern in the fold margin.
-- @param buffer The global buffer.
-- @param use_setting Enable color change.
-- @param color A color in `0xBBGGRR` format.
function buffer.set_fold_margin_hi_colour(buffer, use_setting, color) end

---
-- Set a back color for active hotspots.
-- @param buffer The global buffer.
-- @param use_setting Enable the color change.
-- @param color A color in `0xBBGGRR` format.
function buffer.set_hotspot_active_back(buffer, use_setting, color) end

---
-- Set a fore color for active hotspots.
-- @param buffer The global buffer.
-- @param use_setting Enable the color change.
-- @param color A color in `0xBBGGRR` format.
function buffer.set_hotspot_active_fore(buffer, use_setting, color) end

---
-- Set the length of the utf8 argument for calling `buffer:encoded_from_utf8()`.
-- @param buffer The global buffer.
-- @param bytes Bytes or `-1` for measuring to first NUL.
function buffer.set_length_for_encode(buffer, bytes) end

---
-- Set the lexing language of the document based on string name.
-- @param buffer The global buffer.
-- @param language_name The language name.
function buffer.set_lexer_language(buffer, language_name) end

---
-- Remember the current position in the undo history as the position at which
-- the document was saved.
-- @param buffer The global buffer.
function buffer.set_save_point(buffer) end

---
-- Select a range of text.
-- The caret is scrolled into view after this operation.
-- @param buffer The global buffer.
-- @param start_pos Start position. If negative, it means the end of the
--   document.
-- @param end_pos End position. If negative, it means remove any selection (i.e.
--   set the `anchor` to the same position as `current_pos`).
function buffer.set_sel(buffer, start_pos, end_pos) end

---
-- Set the background color of the main and additional selections and whether to
-- use this setting.
-- @param buffer The global buffer.
-- @param use_setting Enable color change.
-- @param color A color in `0xBBGGRR` format.
function buffer.set_sel_back(buffer, use_setting, color) end

---
-- Set the foreground color of the main and additional selections and whether
-- to use this setting.
-- @param buffer The global buffer.
-- @param use_setting Enable color change.
-- @param color A color in `0xBBGGRR` format.
function buffer.set_sel_fore(buffer, use_setting, color) end

---
-- Set a simple selection from anchor to caret.
-- @param buffer The global buffer.
-- @param caret The caret.
-- @param anchor The anchor.
function buffer.set_selection(buffer, caret, anchor) end

---
-- Change style from current styling position for length characters to a style
-- and move the current styling position to after this newly styled segment.
-- @param buffer The global buffer.
-- @param length The length to style.
-- @param style The style number to set.
function buffer.set_styling(buffer, length, style) end

---
-- Replace the contents of the document with the argument text.
-- @param buffer The global buffer.
-- @param text The text.
function buffer.set_text(buffer, text) end

---
-- Set the way the display area is determined when a particular line is to be
-- moved to by `buffer:goto_line()`, etc.
-- It is similar in operation to `buffer:set_y_caret_policy()`.
-- @param buffer The global buffer.
-- @param visible_policy A combination of `_SCINTILLA.constants.VISIBLE_SLOP`,
--   (0x01) and `_SCINTILLA.constants.VISIBLE_STRICT` (0x04).
-- @param visible_slop The slop value.
function buffer.set_visible_policy(buffer, visible_policy, visible_slop) end

---
-- Set the background color of all whitespace and whether to use this setting.
-- @param buffer The global buffer.
-- @param use_setting Enable color change.
-- @param color A color in `0xBBGGRR` format.
function buffer.set_whitespace_back(buffer, use_setting, color) end

---
-- Set the foreground color of all whitespace and whether to use this setting.
-- @param buffer The global buffer.
-- @param use_setting Enable color change.
-- @param color A color in `0xBBGGRR` format.
function buffer.set_whitespace_fore(buffer, use_setting, color) end

---
-- Set the way the caret is kept visible when going sideway.
-- The exclusion zone is given in pixels.
-- @param buffer The global buffer.
-- @param caret_policy A combination of `_SCINTILLA.constants.CARET_SLOP`
--   (0x01), `_SCINTILLA.constants.CARET_STRICT` (0x04),
--   `_SCINTILLA.constants.CARET_JUMPS` (0x10), and
--   `_SCINTILLA.constants.CARET_EVEN` (0x08).
-- @param caret_slop A slop value.
function buffer.set_x_caret_policy(buffer, caret_policy, caret_slop) end

---
-- Set the way the line the caret is on is kept visible.
-- @param buffer The global buffer.
-- @param caret_policy A combination of `_SCINTILLA.constants.CARET_SLOP`
--   (0x01), `_SCINTILLA.constants.CARET_STRICT` (0x04),
--   `_SCINTILLA.constants.CARET_JUMPS` (0x10), and
--   `_SCINTILLA.constants.CARET_EVEN` (0x08).
-- @param caret_slop A slop value.
function buffer.set_y_caret_policy(buffer, caret_policy, caret_slop) end

---
-- Make a range of lines visible.
-- This has no effect on fold levels or fold flags. `start_line` can not be
-- hidden.
-- @param buffer The global buffer.
-- @param start_line The start line.
-- @param end_line The end line.
function buffer.show_lines(buffer, start_line, end_line) end

---
-- Start notifying the container of all key presses and commands.
-- @param buffer The global buffer.
function buffer.start_record(buffer) end

---
-- Set the current styling position to pos and the styling mask to mask.
-- The styling mask can be used to protect some bits in each styling byte from
-- modification.
-- @param buffer The global buffer.
-- @param position The styling position.
-- @param mask The bit mask of the style bytes that can be set.
function buffer.start_styling(buffer, position, mask) end

---
-- Stop notifying the container of all key presses and commands.
-- @param buffer The global buffer.
function buffer.stop_record(buffer) end

---
-- Move caret to bottom of page, or one page down if already at bottom of page.
-- @param buffer The global buffer.
function buffer.stuttered_page_down(buffer) end

---
-- Move caret to bottom of page, or one page down if already at bottom of page,
-- extending selection to new caret position.
-- @param buffer The global buffer.
function buffer.stuttered_page_down_extend(buffer) end

---
-- Move caret to top of page, or one page up if already at top of page.
-- @param buffer The global buffer.
function buffer.stuttered_page_up(buffer) end

---
-- Move caret to top of page, or one page up if already at top of page,
-- extending selection to new caret position.
-- @param buffer The global buffer.
function buffer.stuttered_page_up_extend(buffer) end

---
-- Clear all the styles and make equivalent to the global default style.
-- @param buffer The global buffer.
function buffer.style_clear_all(buffer) end

---
-- Returns the font name of a given style.
-- @param buffer The global buffer.
-- @param style_num The style number.
-- @return string
function buffer.style_get_font(buffer, style_num) end

---
-- Reset the default style to its state at startup.
-- @param buffer The global buffer.
function buffer.style_reset_default(buffer) end

---
-- Swap that caret and anchor of the main selection.
-- @param buffer The global buffer.
function buffer.swap_main_anchor_caret(buffer) end

---
-- If selection is empty or all on one line replace the selection with a tab
-- character, or if more than one line selected, indent the lines.
-- @param buffer The global buffer.
function buffer.tab(buffer) end

---
-- Returns the target converted to UTF8.
-- @param buffer The global buffer.
function buffer.target_as_utf8(buffer) end

---
-- Make the target range start and end be the same as the selection range start
-- and end.
-- @param buffer The global buffer.
function buffer.target_from_selection(buffer) end

---
-- Retrieve the height of a particular line of text in pixels.
-- @param buffer The global buffer.
-- @param line The line number.
-- @return number
function buffer.text_height(buffer, line) end

---
-- Measure the pixel width of some text in a particular style.
-- Does not handle tab or control characters.
-- @param buffer The global buffer.
-- @param style_num The style number between `0` and `255`.
-- @param text The text.
-- @return number
function buffer.text_width(buffer, style_num, text) end

---
-- Switch between sticky and non-sticky: meant to be bound to a key.
-- See `buffer.caret_sticky`.
-- @param buffer The global buffer.
function buffer.toggle_caret_sticky(buffer) end

---
-- Switch a header line between expanded and contracted.
-- @param buffer The global buffer.
-- @param line The line number.
function buffer.toggle_fold(buffer, line) end

---
-- Undo one action in the undo history.
-- @param buffer The global buffer.
function buffer.undo(buffer) end

---
-- Transform the selection to upper case.
-- @param buffer The global buffer.
function buffer.upper_case(buffer) end

---
-- Sets whether a pop up menu is displayed automatically when the user presses
-- the wrong mouse button.
-- @param buffer The global buffer.
-- @param allow_popup Allow popup menu.
function buffer.use_pop_up(buffer, allow_popup) end

---
-- Display a list of strings and send notification when user chooses one.
-- @param buffer The global buffer.
-- @param list_type A list identifier number greater than zero.
-- @param item_list List of words separated by separator characters (initially
--   spaces).
-- @see _SCINTILLA.next_user_list_type
function buffer.user_list_show(buffer, list_type, item_list) end

---
-- Move caret to before first visible character on line.
-- If already there move to first character on line.
-- @param buffer The global buffer.
function buffer.vc_home(buffer) end

---
-- Like `buffer:vc_home()` but extending selection to new caret position.
-- @param buffer The global buffer.
function buffer.vc_home_extend(buffer) end

---
-- Move caret to before first visible character on line.
-- If already there move to first character on line. In either case, extend
-- rectangular selection to new caret position.
-- @param buffer The global buffer.
function buffer.vc_home_rect_extend(buffer) end

---
-- Move caret to before first visible character on display line when word-wrap
-- is enabled.
-- If already there, go to first character on display line.
-- @param buffer The global buffer.
function buffer.vc_home_wrap(buffer) end

---
-- Like `buffer:vc_home_wrap()` but extending selection to new caret position.
-- @param buffer The global buffer.
function buffer.vc_home_wrap_extend(buffer) end

---
-- Center current line in window.
-- @param buffer The global buffer.
function buffer.vertical_centre_caret(buffer) end

---
-- Find the display line of a document line taking hidden lines into account.
-- If there is folding and line is outside the range of lines in the document,
-- the return value is `-1`.
-- @param buffer The global buffer.
-- @param line The line number.
-- @return number
function buffer.visible_from_doc_line(buffer, line) end

---
-- Get position of end of word.
-- @param buffer The global buffer.
-- @param pos The position.
-- @param only_word_chars If `true`, stops searching at the first non-word
--   character in the search direction. Otherwise, the first character in the
--   search direction sets the type of the search as word or non-word and the
--   search stops at the first non-matching character. Searches are also
--   terminated by the start or end of the document.
function buffer.word_end_position(buffer, pos, only_word_chars) end

---
-- Move caret left one word.
-- @param buffer The global buffer.
function buffer.word_left(buffer) end

---
-- Move caret left one word, position cursor at end of word.
-- @param buffer The global buffer.
function buffer.word_left_end(buffer) end

---
-- Move caret left one word, position cursor at end of word, extending selection
-- to new caret position.
-- @param buffer The global buffer.
function buffer.word_left_end_extend(buffer) end

---
-- Move caret left one word extending selection to new caret position.
-- @param buffer The global buffer.
function buffer.word_left_extend(buffer) end

---
-- Move to the previous change in capitalisation or underscores.
-- @param buffer The global buffer.
function buffer.word_part_left(buffer) end

---
-- Move to the previous change in capitalisation or underscores extending
-- selection to new caret position.
-- @param buffer The global buffer.
function buffer.word_part_left_extend(buffer) end

---
-- Move to the next change in capitalisation or underscores.
-- @param buffer The global buffer.
function buffer.word_part_right(buffer) end

---
-- Move to the next change in capitalisation or underscores extending selection
-- to new caret position.
-- @param buffer The global buffer.
function buffer.word_part_right_extend(buffer) end

---
-- Move caret right one word.
-- @param buffer The global buffer.
function buffer.word_right(buffer) end

---
-- Move caret right one word, position cursor at end of word.
-- @param buffer The global buffer.
function buffer.word_right_end(buffer) end

---
-- Move caret right one word, position cursor at end of word, extending
-- selection to new caret position.
-- @param buffer The global buffer.
function buffer.word_right_end_extend(buffer) end

---
-- Move caret right one word extending selection to new caret position.
-- @param buffer The global buffer.
function buffer.word_right_extend(buffer) end

---
-- Get position of start of word.
-- @param buffer The global buffer.
-- @param pos The position.
-- @param only_word_chars If `true`, stops searching at the first non-word
--   character in the search direction. Otherwise, the first character in the
--   search direction sets the type of the search as word or non-word and the
--   search stops at the first non-matching character. Searches are also
--   terminated by the start or end of the document.
function buffer.word_start_position(buffer, pos, only_word_chars) end

---
-- Returns the number of display lines needed to wrap a document line.
-- @param buffer The global buffer.
-- @param line The line number.
-- @return number
function buffer.wrap_count(buffer, line) end

---
-- Magnify the displayed text by increasing the sizes by 1 point if the current
-- zoom factor is less than 20 points.
-- @param buffer The global buffer.
function buffer.zoom_in(buffer) end

---
-- Make the displayed text smaller by decreasing the sizes by 1 point if the
-- current zoom factor is greater than -10 points.
-- @param buffer The global buffer.
function buffer.zoom_out(buffer) end

-- External functions.

---
-- Checks whether the given buffer is the global one.
-- If not, throws an error indicating so. It is necessary to call this at the
-- top of all buffer functions to avoid unexpected behavior since most buffer
-- functions operate on `_G.buffer`, which is not necessarily the given one.
-- @param buffer The buffer to check.
function buffer.check_global(buffer) end

---
-- Deletes the current buffer.
-- WARNING: this function should NOT be called via scripts. Use `buffer:close()`
-- instead, which prompts for confirmation if necessary. Generates a
-- `BUFFER_DELETED` event.
-- @param buffer The global buffer.
function buffer.delete(buffer) end

---
-- Gets a range of text from the current buffer.
-- @param buffer The global buffer.
-- @param start_pos The beginning position of the range of text to get.
-- @param end_pos The end position of the range of text to get.
function buffer.text_range(buffer, start_pos, end_pos) end

---
-- Reloads the file in a given buffer.
-- @param buffer The global buffer.
function buffer.reload(buffer) end

---
-- Sets the encoding for the buffer, converting its contents in the process.
-- @param buffer The global buffer.
-- @param encoding The encoding to set. Valid encodings are ones that GTK's
--   `g_convert()` function accepts (typically GNU iconv's encodings).
-- @usage buffer.set_encoding(buffer, 'ASCII')
function buffer.set_encoding(buffer, encoding) end

---
-- Saves the current buffer to a file.
-- @param buffer The global buffer.
function buffer.save(buffer) end

---
-- Saves the current buffer to a file different than its filename property.
-- @param buffer The global buffer.
-- @param utf8_filename The new filepath to save the buffer to. Must be UTF-8
--   encoded.
function buffer.save_as(buffer, utf8_filename) end

---
-- Closes the current buffer.
-- @param buffer The global buffer.
-- If the buffer is dirty, the user is prompted to continue. The buffer is not
-- saved automatically. It must be done manually.
function buffer.close(buffer) end

---
-- Replacement for `buffer.set_lexer_language(buffer)`.
-- Sets a `buffer._lexer` field so it can be restored without querying the
-- mime-types tables. Also if the user manually sets the lexer, it should be
-- restored.
-- Loads the language-specific module if it exists.
-- This function is added by `_M.textadept.mime_types`.
-- @param buffer The global buffer.
-- @param lang The string language to set.
-- @usage buffer.set_lexer(buffer, 'language_name')
function buffer.set_lexer(buffer, lang) end

---
-- Replacement for `buffer.get_lexer_language(buffer)`.
-- @param buffer The global buffer.
-- @param current Whether to get the lexer at the current caret position in
--   multi-language lexers. The default is `false` and returns the parent lexer.
function buffer.get_lexer(buffer, current) end

---
-- Returns the name of the style associated with a style number.
-- @param buffer The global buffer.
-- @param style_num A style number from `0` to `255`.
-- @see buffer.style_at
function buffer.get_style_name(buffer, style_num) end

-- Unused Fields.
--   * use_palette
--   * doc_pointer
--   * mod_event_mask
--   * paste_convert_endings
--   * character_pointer
--   * identifier
--   * key_words
--   * technology

-- Unused Functions.
--   * add_styled_text
--   * get_styled_text
--   * assign_cmd_key
--   * clear_cmd_key
--   * set_styling_ex
--   * find_text
--   * format_range
--   * null
--   * create_document
--   * add_ref_document
--   * release_document
--   * margin_set_styles
--   * margin_get_styles
--   * annotation_set_styles
--   * annotation_get_styles
--   * add_undo_action
--   * load_lexer_library
--   * property_names
--   * property_type
--   * describe_property
--   * describe_key_word_sets
--   * create_loader