# \[PATCH 31/67\] help: drop prepend function in favor of xstrfmt

- From: Jeff King \<hidden\>
- Date: 2016-06-15 23:06:33 
- List: git
- Page: https://ratatoskr.run/git/2016/06/7664302
- Thread: https://ratatoskr.run/git/2016/06/7664270/t.md

```text
This function predates xstrfmt, and its functionality is a
subset. Let's just use xstrfmt.

Signed-off-by: Jeff King <redacted>
---
 builtin/help.c | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/builtin/help.c b/builtin/help.c
index 3422e73..fba8c01 100644
--- a/builtin/help.c
+++ b/builtin/help.c
@@ -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)
-- 
2.6.0.rc2.408.ga2926b9
```