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vim-patch:9.1.1341: cannot define completion triggers

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Problem:  Cannot define completion triggers and act upon it
Solution: add the new option 'isexpand' and add the complete_match()
          function to return the completion matches according to the
          'isexpand' setting (glepnir)

Currently, completion trigger position is determined solely by the
'iskeyword' pattern (\k\+$), which causes issues when users need
different completion behaviors - such as triggering after '/' for
comments or '.' for methods. Modifying 'iskeyword' to include these
characters has undesirable side effects on other Vim functionality that
relies on keyword definitions.

Introduce a new buffer-local option 'isexpand' that allows specifying
different completion triggers and add the complete_match() function that
finds the appropriate start column for completion based on these
triggers, scanning backwards from cursor position.

This separation of concerns allows customized completion behavior
without affecting iskeyword-dependent features. The option's
buffer-local nature enables per-filetype completion triggers.

closes: vim/vim#16716

bcd5995b40

Co-authored-by: glepnir <glephunter@gmail.com>
This commit is contained in:
glepnir
2025-04-26 13:06:43 +08:00
parent ac8ae1596c
commit fcabbc2283
13 changed files with 434 additions and 0 deletions
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18
runtime/lua/vim/_meta/options.lua generated
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@ -3429,6 +3429,24 @@ vim.o.inf = vim.o.infercase
vim.bo.infercase = vim.o.infercase
vim.bo.inf = vim.bo.infercase
--- Defines characters and patterns for completion in insert mode. Used by
--- the `complete_match()` function to determine the starting position for
--- completion. This is a comma-separated list of triggers. Each trigger
--- can be:
--- - A single character like "." or "/"
--- - A sequence of characters like "->", "/*", or "/**"
---
--- Note: Use "\\," to add a literal comma as trigger character, see
--- `option-backslash`.
---
--- @type string
vim.o.isexpand = ""
vim.o.ise = vim.o.isexpand
vim.bo.isexpand = vim.o.isexpand
vim.bo.ise = vim.bo.isexpand
vim.go.isexpand = vim.o.isexpand
vim.go.ise = vim.go.isexpand
--- The characters specified by this option are included in file names and
--- path names. Filenames are used for commands like "gf", "[i" and in
--- the tags file. It is also used for "\f" in a `pattern`.