From 1ef52910df3a560d24a1d92e6fe7621a751d6859 Mon Sep 17 00:00:00 2001
From: mitchell <70453897+667e-11@users.noreply.github.com>
Date: Thu, 8 Mar 2012 13:44:53 -0500
Subject: Moved Manual into `doc/` root directory.

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+# Advanced
+
+## Command Entry
+
+Access to the Lua state is available through the command entry. Press `Ctrl+E`
+(`⌘E` on Mac OSX) to access it. It is useful for debugging, inspecting, and
+entering buffer or view commands. If you try to cause instability in Textadept's
+Lua state, you might very well succeed so be careful. For more information, see
+the [scripting][] page.
+
+Abbreviated commands for the `buffer`, `view` and `gui` are available. So
+`buffer:append_text('foo')` can be shortened to `append_text('foo')`. `print()`
+redirects to  [`gui.print()`][]. Use `_G.print()` for Lua's `print()`.
+
+![Command Entry](images/commandentry.png)
+
+[scripting]: 11_Scripting.html
+[`gui.print()`]: api/gui.html#print
+
+### Tab Completion
+
+Tab-completion for functions, variables, tables, etc. is available. Press the
+`Tab` (`⇥`) key to display a list of available completions. Use the arrow keys
+to make a selection and press `Enter` (`↩`) to insert it.
+
+![Command Completion](images/commandentrycompletion.png)
+
+### Extending
+
+You can extend the command entry to do more than enter Lua commands. An
+example of this is [incremental search][]. See `modules/textadept/find.lua` for
+the implementation.
+
+[incremental search]: api/gui.find.html#find_incremental
+
+## Command Selection
+
+If you did not disable the menu in your [preferences][], then pressing
+`Ctrl+Shift+E` (`⌘⇧E` on Mac OSX) brings up the command selection dialog. Typing
+part of any command filters the list with spaces being wildcards. This is an
+easy way to run commands without navigating the menus, using the mouse, or
+remembering key commands. It is also useful for looking up particular key
+commands quickly.
+
+[preferences]: 9_Preferences.html#User.Init
+
+## Shell Commands and Filtering Text
+
+Sometimes it is easier to use an existing shell command to manipulate text
+instead of using the command entry. An example would be sorting all text in a
+buffer (or a selection). You could do the following from the command entry:
+
+    ls={}; for l in buffer:get_text():gmatch('[^\n]+') do ls[#ls+1]=l end;
+    table.sort(ls); buffer:set_text(table.concat(ls, '\n'))
+
+A simpler way would be to press `Ctrl+|` (`⌘|` on Mac OSX), enter the shell
+command `sort`, and hit `Enter` (`↩`).
+
+The standard input (stdin) for shell commands is determined as follows:
+
+* If text is selected and spans multiple lines, all text on the lines containing
+  the selection is used. However, if the end of the selection is at the
+  beginning of a line, only the EOL (end of line) characters from the previous
+  line are included as input. The rest of the line is excluded.
+* If text is selected and spans a single line, only the selected text is used.
+* If no text is selected, the entire buffer is used.
+
+The input text is replaced with the standard output (stdout) of the command.
+
+## File Encoding
+
+Textadept represents all characters and strings internally as UTF-8. You will
+not notice any difference for working with files containing ASCII text since
+UTF-8 is compatible with it. Textadept can also detect ISO-8859-1 and MacRoman,
+the primary encodings used on Windows and Mac OSX respectively. Files with more
+exotic encodings may not be detected properly, if at all. You can change the
+list of encodings Textadept tries to detect via [`io.try_encodings`][].
+
+It is recommended to use UTF-8 encoded files because UTF-8 is very well
+supported by other text editors and operating systems. You can change the file's
+encoding via the `Buffer -> Encoding` menu. Textadept saves new files as UTF-8
+by default.
+
+[`io.try_encodings`]: api/io.html#try_encodings
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