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vim-patch:9.1.1166: command-line auto-completion hard with wildmenu

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Problem:  command-line auto-completion hard with wildmenu
Solution: implement "noselect" wildoption value (Girish Palya)

When `noselect` is present in `wildmode` and 'wildmenu' is enabled, the
completion menu appears without pre-selecting the first item.

This change makes it easier to implement command-line auto-completion,
where the menu dynamically appears as characters are typed, and `<Tab>`
can be used to manually select an item. This can be achieved by
leveraging the `CmdlineChanged` event to insert `wildchar(m)`,
triggering completion menu.

Without this change, auto-completion using the 'wildmenu' mechanism is
not feasible, as it automatically inserts the first match, preventing
dynamic selection.

The following Vimscript snippet demonstrates how to configure
auto-completion using `noselect`:

```vim
vim9script
set wim=noselect:lastused,full wop=pum wcm=<C-@> wmnu
autocmd CmdlineChanged : timer_start(0, function(CmdComplete, [getcmdline()]))

def CmdComplete(cur_cmdline: string, timer: number)
  var [cmdline, curpos] = [getcmdline(), getcmdpos()]
  if cur_cmdline ==# cmdline  # Avoid completing each character in keymaps and pasted text
    && !pumvisible() && curpos == cmdline->len() + 1

    if cmdline[curpos - 2] =~ '[\w*/:]'  # Reduce noise by completing only selected characters
      feedkeys("\<C-@>", "ti")
      set eventignore+=CmdlineChanged  # Suppress redundant completion attempts
      timer_start(0, (_) => {
        getcmdline()->substitute('\%x00$', '', '')->setcmdline()  # Remove <C-@> if no completion items exist
        set eventignore-=CmdlineChanged
      })
    endif
  endif
enddef
```

fixes: vim/vim#16551
closes: vim/vim#16759

2bacc3e5fb

Cherry-pick Wildmode_Tests() change from patch 9.0.0418.

Co-authored-by: Girish Palya <girishji@gmail.com>
Signed-off-by: Tomas Slusny <slusnucky@gmail.com>
This commit is contained in:
Tomas Slusny
2025-03-03 17:51:42 +01:00
committed by zeertzjq
parent 948179cb19
commit 99d688e645
9 changed files with 105 additions and 19 deletions
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15
src/nvim/ex_getln.c
View File

@@ -1082,6 +1082,9 @@ static int command_line_wildchar_complete(CommandLineState *s)
if (wim_flags[s->wim_index] & kOptWimFlagLastused) {
options |= WILD_BUFLASTUSED;
}
if (wim_flags[0] & kOptWimFlagNoselect) {
options |= WILD_KEEP_SOLE_ITEM;
}
if (s->xpc.xp_numfiles > 0) { // typed p_wc at least twice
// if 'wildmode' contains "list" may still need to list
if (s->xpc.xp_numfiles > 1
@@ -1124,19 +1127,20 @@ static int command_line_wildchar_complete(CommandLineState *s)
// when more than one match, and 'wildmode' first contains
// "list", or no change and 'wildmode' contains "longest,list",
// list all matches
if (res == OK && s->xpc.xp_numfiles > 1) {
if (res == OK
&& s->xpc.xp_numfiles > ((wim_flags[s->wim_index] & kOptWimFlagNoselect) ? 0 : 1)) {
// a "longest" that didn't do anything is skipped (but not
// "list:longest")
if (wim_flags[0] == kOptWimFlagLongest && ccline.cmdpos == j) {
s->wim_index = 1;
}
if ((wim_flags[s->wim_index] & kOptWimFlagList)
|| (p_wmnu && (wim_flags[s->wim_index] & kOptWimFlagFull) != 0)) {
|| (p_wmnu && (wim_flags[s->wim_index] & (kOptWimFlagFull|kOptWimFlagNoselect)))) {
if (!(wim_flags[0] & kOptWimFlagLongest)) {
int p_wmnu_save = p_wmnu;
p_wmnu = 0;
// remove match
nextwild(&s->xpc, WILD_PREV, 0, s->firstc != '@');
nextwild(&s->xpc, WILD_PREV, 0 | (options & ~kOptWimFlagNoselect), s->firstc != '@');
p_wmnu = p_wmnu_save;
}
@@ -1146,7 +1150,8 @@ static int command_line_wildchar_complete(CommandLineState *s)
if (wim_flags[s->wim_index] & kOptWimFlagLongest) {
nextwild(&s->xpc, WILD_LONGEST, options, s->firstc != '@');
} else if (wim_flags[s->wim_index] & kOptWimFlagFull) {
} else if ((wim_flags[s->wim_index] & kOptWimFlagFull)
&& !(wim_flags[s->wim_index] & kOptWimFlagNoselect)) {
nextwild(&s->xpc, WILD_NEXT, options, s->firstc != '@');
}
} else {
@@ -2875,6 +2880,8 @@ int check_opt_wim(void)
new_wim_flags[idx] |= kOptWimFlagList;
} else if (i == 8 && strncmp(p, "lastused", 8) == 0) {
new_wim_flags[idx] |= kOptWimFlagLastused;
} else if (i == 8 && strncmp(p, "noselect", 8) == 0) {
new_wim_flags[idx] |= kOptWimFlagNoselect;
} else {
return FAIL;
}