# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1651851903 -7200
# Node ID db38dab0e5259a90ac4bbca34084e6d7dedf9cc5
# Parent  583ad06095ea4584701fe3544a09dcd19b1a17fd
patch 8.2.4891: Vim help presentation could be better

Commit: https://github.com/vim/vim/commit/b3c9077a5be76cd88b9a0c07b6d6c072d5c8ac3e
Author: Bram Moolenaar <Bram@vim.org>
Date:   Fri May 6 16:32:46 2022 +0100

    patch 8.2.4891: Vim help presentation could be better

    Problem:    Vim help presentation could be better.
    Solution:   Add an imported file for extra Vim help support.  Show highlight
                names in the color they have.

diff --git a/Filelist b/Filelist
--- a/Filelist
+++ b/Filelist
@@ -722,6 +722,7 @@ RT_ALL =	\
 		runtime/doc/xxd.1 \
 		runtime/ftoff.vim \
 		runtime/gvimrc_example.vim \
+		runtime/import/dist/vimhelp.vim \
 		runtime/macros/README.txt \
 		runtime/macros/editexisting.vim \
 		runtime/macros/hanoi/click.me \
diff --git a/runtime/import/dist/vimhelp.vim b/runtime/import/dist/vimhelp.vim
new file mode 100644
--- /dev/null
+++ b/runtime/import/dist/vimhelp.vim
@@ -0,0 +1,21 @@
+vim9script
+
+# Extra functionality for displaying Vim help .
+
+# Called when editing the doc/syntax.txt file
+export def HighlightGroups()
+  var buf: number = bufnr('%')
+  var lnum: number = search('\*highlight-groups\*', 'cn')
+  while getline(lnum) !~ '===' && lnum < line('$')
+    var word: string = getline(lnum)->matchstr('^\w\+\ze\t')
+    if word->hlexists()
+      prop_type_add('help-hl-' .. word, {
+	bufnr: buf,
+	highlight: word,
+	combine: false,
+	})
+      prop_add(lnum, 1, {length: word->strlen(), type: 'help-hl-' .. word})
+    endif
+    ++lnum
+  endwhile
+enddef
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4891,
+/**/
     4890,
 /**/
     4889,