From: Alejandro Colomar <alx@kernel.org>
Date: Fri, 7 Apr 2023 20:58:30 +0000 (+0200)
Subject: bash_aliases: Optimize man_section()
X-Git-Tag: man-pages-6.05-a1~27
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0a9ea7be7c04973cc11a827ab2f1a1aba7361dd4;p=thirdparty%2Fman-pages.git

bash_aliases: Optimize man_section()

mandoc(1) renders pages much faster than groff(1), which is itself much
faster than using man(1).  This might seem irrelevant for a single page,
but this function is called in a loop in man_lsfunc() and man_lsvar(),
where this brings times down considerably.  For comparison,
`time man_lsfunc man*` took around 55 s (on my system) before this
change.  With groff(1), it would take around 14 s, and with mandoc(1)
(this patch), it takes 4 s.

Cc: Ingo Schwarze <schwarze@openbsd.org>
Cc: "G. Branden Robinson" <g.branden.robinson@gmail.com>
Cc: Gavin Smith <gavinsmith0123@gmail.com>
Cc: Dirk Gouders <dirk@gouders.net>
Cc: Colin Watson <cjwatson@debian.org>
Cc: Eli Zaretskii <eliz@gnu.org>
Cc: Larry McVoy <lm@mcvoy.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
---

diff --git a/scripts/bash_aliases b/scripts/bash_aliases
index 9f7d104093..5c0458402e 100644
--- a/scripts/bash_aliases
+++ b/scripts/bash_aliases
@@ -65,7 +65,8 @@ man_section()
 				-e "/^\.SH $s/p" \
 				-e "/^\.SH $s/,/^\.SH/{/^\.SH/!p}";
 		 done;) \
-		|man -P cat -l - 2>/dev/null;
+		|mandoc -Tutf8 2>/dev/null \
+		|col -pbx;
 	done;
 }