misc(nvim): note name/heading autocompletion

1 files changed, 22 insertions, 1 deletions

diff --git a/plugin/50-notes.lua b/plugin/50-notes.lua
index 8b64d59..3172a02 100644
--- a/plugin/50-notes.lua
+++ b/plugin/50-notes.lua
@@ -3,7 +3,8 @@
 --
 -- * Turns the directory in `$NOTES_DIR` into a wiki of markdown notes linked with `[[wiki-links]]`.
 -- * Generates ctags for the notes and regenerates them whenever a note is written.
--- * Provides 'omnifunc' wiki-link completion: note names inside `[[`, headings after `#`.
+-- * Provides 'omnifunc' wiki-link completion: note names inside `[[`, headings after `#`;
+--   auto-triggered as soon as `[[` or `#` is typed in a notes buffer.
 -- * Provides fzf-lua pickers to find notes by tag/name/section, by file name, or by content.
 -- * Provides rename commands that move the note (or rewrite a heading) and update every
 --   `[[wiki-link]]` pointing to it across all notes, editing loaded buffers in place and the rest
@@ -480,6 +481,26 @@ vim.api.nvim_create_autocmd("BufWritePost", {
 	callback = generate_tags,
 })
 
+-- Pop wiki-link completion as soon as `[[` (note name) or `#` (heading) is typed. 'autocomplete'
+-- only triggers on keyword characters, so it would otherwise wait for the first note-name char.
+-- This watches the typed text instead of mapping `[`, so nvim-autopairs keeps its `[` -> `[]` rule;
+-- the omnifunc silently cancels (returns -3) when the cursor is not inside an open `[[`, so the `#`
+-- triggers on plain headings are harmless.
+vim.api.nvim_create_autocmd("TextChangedI", {
+	desc = "Trigger wiki-link completion after `[[` or `#`",
+	group = vim.g.dotfiles.augroup,
+	callback = function()
+		if vim.bo.omnifunc ~= "v:lua.dotfiles_wikilink_source" or vim.fn.pumvisible() == 1 then
+			return
+		end
+		local col = vim.api.nvim_win_get_cursor(0)[2]
+		local before = vim.api.nvim_get_current_line():sub(1, col)
+		if before:sub(-2) == "[[" or before:sub(-1) == "#" then
+			vim.api.nvim_feedkeys(vim.keycode("<C-x><C-o>"), "n", false)
+		end
+	end,
+})
+
 vim.api.nvim_create_user_command(
 	"NotesRename",
 	rename_note_command,