[git commit] man: don't skip default path which appears in config file

[Denys Vlasenko]

commit: https://git.busybox.net/busybox/commit/?id=3c6f3336e124be483e4852f022b1d07c1d2f7f2c
branch: https://git.busybox.net/busybox/commit/?id=refs/heads/master

If the MANPATH environment variable isn't set a provisional default
path of /usr/man is placed in man_path_list.  This is only used if a
configuration file doesn't contain an alternative path.

If a configuration file lists the default path first:

   MANPATH /usr/man:/usr/share/man

add_MANPATH() sees that the default entry is already present and skips
it.  As a result man_path_list only contains the second and subsequent
components of the configured MANPATH.

In such cases the path should not be skipped.

function                                             old     new   delta
add_MANPATH                                          170     183     +13
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/0 up/down: 13/0)               Total: 13 bytes

Signed-off-by: Ron Yorston <rmy at pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
---
 miscutils/man.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/miscutils/man.c b/miscutils/man.c
index 01155c8f0..9884325b7 100644
--- a/miscutils/man.c
+++ b/miscutils/man.c
@@ -209,8 +209,12 @@ static char **add_MANPATH(char **man_path_list, int *count_mp, char *path)
 		/* Do we already have path? */
 		path_element = man_path_list;
 		if (path_element) while (*path_element) {
-			if (strcmp(*path_element, path) == 0)
+			if (strcmp(*path_element, path) == 0) {
+				/* Have path but haven't counted it, must be default */
+				if (*count_mp == 0)
+					break;
 				goto skip;
+			}
 			path_element++;
 		}
 		man_path_list = xrealloc_vector(man_path_list, 4, *count_mp);