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List: busybox
Subject: Fwd: [PATCH] man: use less as default pager and parse DEFINE lines defining pager
From: John Spencer <maillist-busybox () barfooze ! de>
Date: 2013-06-30 17:34:16
Message-ID: 51D06C18.7020601 () barfooze ! de
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ping
-------- Original Message --------
man.config can define lines such as
DEFINE pager less -s
this patch parses them, additionally it always sets pager to less
instead of more.
Signed-off-by: John Spencer <maillist-busybox@barfooze.de>
["busybox-man-pager.patch" (text/x-patch)]
--- busybox-1.20.2.org/miscutils/man.c 2013-06-02 10:12:54.251000003 +0000
+++ busybox-1.20.2/miscutils/man.c 2013-06-02 10:43:25.251000003 +0000
@@ -150,7 +150,7 @@
int man_main(int argc UNUSED_PARAM, char **argv)
{
parser_t *parser;
- const char *pager;
+ const char *pager = 0;
char **man_path_list;
char *sec_list;
char *cur_path, *cur_sect;
@@ -171,12 +171,6 @@
man_path_list[0] = (char*)"/usr/man";
else
count_mp++;
- pager = getenv("MANPAGER");
- if (!pager) {
- pager = getenv("PAGER");
- if (!pager)
- pager = "more";
- }
/* Parse man.conf[ig] or man_db.conf */
/* man version 1.6f uses man.config */
@@ -190,7 +184,13 @@
while (config_read(parser, token, 2, 0, "# \t", PARSE_NORMAL)) {
if (!token[1])
continue;
- if (strcmp("MANDATORY_MANPATH"+10, token[0]) == 0 /* "MANPATH"? */
+ if (strcmp("DEFINE", token[0]) == 0) {
+ size_t n = 5;
+ if (strncmp("pager", token[1], n) == 0) {
+ while(isspace(token[1][++n]));
+ pager = xstrdup(token[1]+n);
+ }
+ } else if (strcmp("MANDATORY_MANPATH"+10, token[0]) == 0 /* "MANPATH"? */
|| strcmp("MANDATORY_MANPATH", token[0]) == 0
) {
char *path = token[1];
@@ -229,6 +229,14 @@
}
}
config_close(parser);
+
+ {
+ /* environment overrides setting from man.config */
+ const char* env_pager = getenv("MANPAGER");
+ if (!env_pager) env_pager = getenv("PAGER");
+ if (env_pager) pager = env_pager;
+ if (!pager) pager = "less";
+ }
not_found = 0;
do { /* for each argv[] */
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