From 97fc6c5fbacc2181319bbd7e2faa8ac04476f862 Mon Sep 17 00:00:00 2001 From: Andreas Ericsson Date: Wed, 16 Nov 2005 00:31:25 +0100 Subject: [PATCH] git --help COMMAND brings up the git-COMMAND man-page. It's by design a bit stupid (matching ^git rather than ^git-), so as to work with 'gitk' and 'git' as well. Signed-off-by: Andreas Ericsson Signed-off-by: Junio C Hamano --- Documentation/git.txt | 2 ++ git.c | 28 ++++++++++++++++++++++++++-- 2 files changed, 28 insertions(+), 2 deletions(-) diff --git a/Documentation/git.txt b/Documentation/git.txt index 15ae4f12d0..338e5acb8b 100644 --- a/Documentation/git.txt +++ b/Documentation/git.txt @@ -24,6 +24,8 @@ OPTIONS --help:: prints the synopsis and a list of available commands. + If a git command is named this option will bring up the + man-page for that command. --exec-path:: path to wherever your core git programs are installed. diff --git a/git.c b/git.c index d18980135f..583923d960 100644 --- a/git.c +++ b/git.c @@ -160,6 +160,26 @@ static void prepend_to_path(const char *dir, int len) setenv("PATH", path, 1); } +/* has anyone seen 'man' installed anywhere else than in /usr/bin? */ +#define PATH_TO_MAN "/usr/bin/man" +static void show_man_page(char *git_cmd) +{ + char *page; + + if (!strncmp(git_cmd, "git", 3)) + page = git_cmd; + else { + int page_len = strlen(git_cmd) + 4; + + page = malloc(page_len + 1); + strcpy(page, "git-"); + strcpy(page + 4, git_cmd); + page[page_len] = 0; + } + + execlp(PATH_TO_MAN, "man", page, NULL); +} + int main(int argc, char **argv, char **envp) { char git_command[PATH_MAX + 1]; @@ -199,8 +219,12 @@ int main(int argc, char **argv, char **envp) usage(NULL, NULL); } - if (i >= argc || show_help) - usage(exec_path, NULL); + if (i >= argc || show_help) { + if (i >= argc) + usage(exec_path, NULL); + + show_man_page(argv[i]); + } /* allow relative paths, but run with exact */ if (chdir(exec_path)) {