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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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7
src/option.c
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@ -6400,6 +6400,9 @@ unset_global_local_option(char_u *name, void *from)
clear_string_option(&buf->b_p_cot);
buf->b_cot_flags = 0;
break;
case PV_ISE:
clear_string_option(&buf->b_p_ise);
break;
case PV_DICT:
clear_string_option(&buf->b_p_dict);
break;
@ -6518,6 +6521,7 @@ get_varp_scope(struct vimoption *p, int scope)
case PV_INC: return (char_u *)&(curbuf->b_p_inc);
#endif
case PV_COT: return (char_u *)&(curbuf->b_p_cot);
case PV_ISE: return (char_u *)&(curbuf->b_p_ise);
case PV_DICT: return (char_u *)&(curbuf->b_p_dict);
case PV_TSR: return (char_u *)&(curbuf->b_p_tsr);
#ifdef FEAT_COMPL_FUNC
@ -6600,6 +6604,8 @@ get_varp(struct vimoption *p)
#endif
case PV_COT: return *curbuf->b_p_cot != NUL
? (char_u *)&(curbuf->b_p_cot) : p->var;
case PV_ISE: return *curbuf->b_p_ise != NUL
? (char_u *)&(curbuf->b_p_ise) : p->var;
case PV_DICT: return *curbuf->b_p_dict != NUL
? (char_u *)&(curbuf->b_p_dict) : p->var;
case PV_TSR: return *curbuf->b_p_tsr != NUL
@ -7431,6 +7437,7 @@ buf_copy_options(buf_T *buf, int flags)
buf->b_cot_flags = 0;
buf->b_p_dict = empty_option;
buf->b_p_tsr = empty_option;
buf->b_p_ise = empty_option;
#ifdef FEAT_COMPL_FUNC
buf->b_p_tsrfu = empty_option;
#endif