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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: #16716

Signed-off-by: glepnir <glephunter@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
glepnir
2025-04-24 21:48:35 +02:00
committed by Christian Brabandt
parent 32f49738d1
commit bcd5995b40
20 changed files with 363 additions and 17 deletions
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4
runtime/doc/version9.txt
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@ -1,4 +1,4 @@
*version9.txt* For Vim version 9.1. Last change: 2025 Apr 23
*version9.txt* For Vim version 9.1. Last change: 2025 Apr 24
VIM REFERENCE MANUAL by Bram Moolenaar
@ -41688,6 +41688,7 @@ Functions: ~
|blob2str()| convert a blob into a List of strings
|bindtextdomain()| set message lookup translation base path
|cmdcomplete_info()| get current cmdline completion info
|complete_match()| get completion and trigger info
|diff()| diff two Lists of strings
|filecopy()| copy a file {from} to {to}
|foreach()| apply function to List items
@ -41750,6 +41751,7 @@ Options: ~
'eventignorewin' autocommand events that are ignored in a window
'findfunc' Vim function to obtain the results for a |:find|
command
'isexpand' defines triggers for completion
'lhistory' Size of the location list stack |quickfix-stack|.
'messagesopt' configure |:messages| and |hit-enter| prompt
'pummaxwidth' maximum width for the completion popup menu