From ee9e8700ae84aa246ec01422aef83b673b5b1cf7 Mon Sep 17 00:00:00 2001
From: mitchell <70453897+667e-11@users.noreply.github.com>
Date: Fri, 8 Nov 2019 23:50:57 -0500
Subject: API file lists and Lua tags lists can contain functions that return
 file paths. This gives more control over when to include certain
 autocompletion and documentation files like Textadept's API.

---
 modules/textadept/command_entry.lua | 9 ---------
 modules/textadept/editing.lua       | 7 +++++--
 2 files changed, 5 insertions(+), 11 deletions(-)

(limited to 'modules/textadept')

diff --git a/modules/textadept/command_entry.lua b/modules/textadept/command_entry.lua
index b506757a..d858f071 100644
--- a/modules/textadept/command_entry.lua
+++ b/modules/textadept/command_entry.lua
@@ -203,21 +203,12 @@ events.connect(events.INITIALIZED, function()
   for key, f in pairs(keys) do
     if f == textadept.editing.show_documentation then
       lua_mode_keys[key] = function()
-        -- Enable Textadept API documentation unless the Lua module already
-        -- enabled it.
-        local api_files = textadept.editing.api_files
-        if not api_files.lua[_HOME] then
-          api_files.lua[#api_files.lua + 1] = _HOME..'/modules/lua/ta_api'
-        end
         -- Temporarily change _G.buffer since ui.command_entry is the "active"
         -- buffer.
         local orig_buffer = _G.buffer
         _G.buffer = ui.command_entry
         textadept.editing.show_documentation()
         _G.buffer = orig_buffer
-        -- Disable Textadept API documentation unless the Lua module previously
-        -- enabled it.
-        if not api_files.lua[_HOME] then api_files.lua[#api_files.lua] = nil end
       end
       break
     end
diff --git a/modules/textadept/editing.lua b/modules/textadept/editing.lua
index 35016c71..fe54e1ed 100644
--- a/modules/textadept/editing.lua
+++ b/modules/textadept/editing.lua
@@ -113,6 +113,7 @@ M.autocompleters = {}
 
 ---
 -- Map of lexer names to API documentation file tables.
+-- File tables contain API file paths or functions that return such paths.
 -- Each line in an API file consists of a symbol name (not a fully qualified
 -- symbol name), a space character, and that symbol's documentation. "\n"
 -- represents a newline character.
@@ -697,8 +698,10 @@ function M.show_documentation(pos, case_insensitive)
       end)
     end
     for i = 1, #M.api_files[lang] do
-      if lfs.attributes(M.api_files[lang][i]) then
-        for line in io.lines(M.api_files[lang][i]) do
+      local file = M.api_files[lang][i]
+      if type(file) == 'function' then file = file() end
+      if file and lfs.attributes(file) then
+        for line in io.lines(file) do
           if line:find(symbol_patt) then
             api_docs[#api_docs + 1] = line:match(symbol_patt..'%s+(.+)$')
           end
-- 
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