vim-patch:9.1.0495: Matched text isn't highlighted in cmdline pum

Problem:  Matched text isn't highlighted in cmdline pum.
Solution: Use cmdline completion pattern in cmdline mode.
          (zeertzjq)

closes: vim/vim#15029

https://github.com/vim/vim/commit/d8c9340fc67ca19f82ec3e77ec38296424e758cf

Cherry-pick syntax.txt change from runtime update.

1 files changed, 31 insertions, 0 deletions

diff --git a/test/old/testdir/test_cmdline.vim b/test/old/testdir/test_cmdline.vim
index f83f782817..4a637552a6 100644
--- a/test/old/testdir/test_cmdline.vim
+++ b/test/old/testdir/test_cmdline.vim
@@ -2923,6 +2923,37 @@ func Test_wildmenu_pum_rightleft()
   call StopVimInTerminal(buf)
 endfunc
 
+" Test highlighting matched text in cmdline completion popup menu.
+func Test_wildmenu_pum_hl_match()
+  CheckScreendump
+
+  let lines =<< trim END
+    set wildoptions=pum,fuzzy
+    hi PmenuMatchSel  ctermfg=6 ctermbg=7
+    hi PmenuMatch     ctermfg=4 ctermbg=225
+  END
+  call writefile(lines, 'Xwildmenu_pum_hl', 'D')
+  let buf = RunVimInTerminal('-S Xwildmenu_pum_hl', #{rows: 10, cols: 50})
+
+  call term_sendkeys(buf, ":sign plc\<Tab>")
+  call VerifyScreenDump(buf, 'Test_wildmenu_pum_hl_match_1', {})
+  call term_sendkeys(buf, "\<Tab>")
+  call VerifyScreenDump(buf, 'Test_wildmenu_pum_hl_match_2', {})
+  call term_sendkeys(buf, "\<Tab>")
+  call VerifyScreenDump(buf, 'Test_wildmenu_pum_hl_match_3', {})
+  call term_sendkeys(buf, "\<Esc>:set wildoptions-=fuzzy\<CR>")
+  call TermWait(buf)
+  call term_sendkeys(buf, ":sign un\<Tab>")
+  call VerifyScreenDump(buf, 'Test_wildmenu_pum_hl_match_4', {})
+  call term_sendkeys(buf, "\<Tab>")
+  call VerifyScreenDump(buf, 'Test_wildmenu_pum_hl_match_5', {})
+  call term_sendkeys(buf, "\<Tab>")
+  call VerifyScreenDump(buf, 'Test_wildmenu_pum_hl_match_6', {})
+  call term_sendkeys(buf, "\<Esc>")
+
+  call StopVimInTerminal(buf)
+endfunc
+
 " Test for completion after a :substitute command followed by a pipe (|)
 " character
 func Test_cmdline_complete_substitute()