use sha1_to_hex_r() instead of strcpy

diff --git a/builtin/help.c b/builtin/help.c
index e78c135e010afa3f9447992ae85a7cc404d0192b..fba8c01e242debd08dc450fa1ed4db587acfdb09 100644 (file)
--- a/builtin/help.c
+++ b/builtin/help.c
@@ -49,7 +49,7 @@ static struct option builtin_help_options[] = {
 };
 
 static const char * const builtin_help_usage[] = {
-       N_("git help [--all] [--guides] [--man|--web|--info] [command]"),
+       N_("git help [--all] [--guides] [--man | --web | --info] [<command>]"),
        NULL
 };
 
@@ -171,7 +171,7 @@ static void exec_man_cmd(const char *cmd, const char *page)
 {
        struct strbuf shell_cmd = STRBUF_INIT;
        strbuf_addf(&shell_cmd, "%s %s", cmd, page);
-       execl("/bin/sh", "sh", "-c", shell_cmd.buf, (char *)NULL);
+       execl(SHELL_PATH, SHELL_PATH, "-c", shell_cmd.buf, (char *)NULL);
        warning(_("failed to exec '%s': %s"), cmd, strerror(errno));
 }
 
@@ -295,16 +295,6 @@ static int is_git_command(const char *s)
                is_in_cmdlist(&other_cmds, s);
 }
 
-static const char *prepend(const char *prefix, const char *cmd)
-{
-       size_t pre_len = strlen(prefix);
-       size_t cmd_len = strlen(cmd);
-       char *p = xmalloc(pre_len + cmd_len + 1);
-       memcpy(p, prefix, pre_len);
-       strcpy(p + pre_len, cmd);
-       return p;
-}
-
 static const char *cmd_to_page(const char *git_cmd)
 {
        if (!git_cmd)
@@ -312,9 +302,9 @@ static const char *cmd_to_page(const char *git_cmd)
        else if (starts_with(git_cmd, "git"))
                return git_cmd;
        else if (is_git_command(git_cmd))
-               return prepend("git-", git_cmd);
+               return xstrfmt("git-%s", git_cmd);
        else
-               return prepend("git", git_cmd);
+               return xstrfmt("git%s", git_cmd);
 }
 
 static void setup_man_path(void)
@@ -456,7 +446,7 @@ static void list_common_guides_help(void)
 int cmd_help(int argc, const char **argv, const char *prefix)
 {
        int nongit;
-       const char *alias;
+       char *alias;
        enum help_format parsed_help_format;
 
        argc = parse_options(argc, argv, prefix, builtin_help_options,
@@ -499,6 +489,7 @@ int cmd_help(int argc, const char **argv, const char *prefix)
        alias = alias_lookup(argv[0]);
        if (alias && !is_git_command(argv[0])) {
                printf_ln(_("`git %s' is aliased to `%s'"), argv[0], alias);
+               free(alias);
                return 0;
        }