[PATCH] lisp/ox-html.el: Move the space after exported section number

[Mingkai Dong <mk@dong.mk>]

* ox-html.el (org-html-headline, org-html-format-headline-default-function):
delete the space after the section number span format and add it back in
org-html-format-headline-default-function.

The requirement is well described in the reddit post
https://www.reddit.com/r/emacs/comments/bv8rli/org_mode_export_section_numbering/
which can be solved by setting the org-html-format-headline-function
variable to a custom function that adds the "." before the section title.
However, this results in something like "1 . Fist-Section-Title", rather
than "1. First-Section-Title", because of the extra space after the <span>
format. Moving the space to org-html-format-headline-default-function preserves
existing export behavior while allowing the users to better control the format.
---
 lisp/ox-html.el | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lisp/ox-html.el b/lisp/ox-html.el
index 89da823e8..f2ce71f68 100644
--- a/lisp/ox-html.el
+++ b/lisp/ox-html.el
@@ -2676,7 +2676,7 @@ holding contextual information."
                           (concat
                            (and numberedp
                                 (format
-                                 "<span class=\"section-number-%d\">%s</span> "
+                                 "<span class=\"section-number-%d\">%s</span>"
                                  level
                                  (mapconcat #'number-to-string numbers ".")))
                            formatted-text)
@@ -2696,7 +2696,8 @@ See `org-html-format-headline-function' for details."
   (let ((todo (org-html--todo todo info))
 	(priority (org-html--priority priority info))
 	(tags (org-html--tags tags info)))
-    (concat todo (and todo " ")
+    (concat " "
+	    todo (and todo " ")
 	    priority (and priority " ")
 	    text
 	    (and tags "&#xa0;&#xa0;&#xa0;") tags)))
-- 
2.31.1