test-regex: Add a test to check for a bug in the regex routines

diff --git a/prompt.c b/prompt.c
index 72ab9de2f94be30eef9e41ced97580f7de48e0fc..d851807feb9849813635471d7099e67ed743a2d7 100644 (file)
--- a/prompt.c
+++ b/prompt.c
@@ -9,6 +9,7 @@ static char *do_askpass(const char *cmd, const char *prompt)
        struct child_process pass;
        const char *args[3];
        static struct strbuf buffer = STRBUF_INIT;
+       int err = 0;
 
        args[0] = cmd;
        args[1] = prompt;
@@ -19,25 +20,30 @@ static char *do_askpass(const char *cmd, const char *prompt)
        pass.out = -1;
 
        if (start_command(&pass))
-               exit(1);
+               return NULL;
 
-       strbuf_reset(&buffer);
        if (strbuf_read(&buffer, pass.out, 20) < 0)
-               die("failed to get '%s' from %s\n", prompt, cmd);
+               err = 1;
 
        close(pass.out);
 
        if (finish_command(&pass))
-               exit(1);
+               err = 1;
+
+       if (err) {
+               error("unable to read askpass response from '%s'", cmd);
+               strbuf_release(&buffer);
+               return NULL;
+       }
 
        strbuf_setlen(&buffer, strcspn(buffer.buf, "\r\n"));
 
-       return buffer.buf;
+       return strbuf_detach(&buffer, NULL);
 }
 
 char *git_prompt(const char *prompt, int flags)
 {
-       char *r;
+       char *r = NULL;
 
        if (flags & PROMPT_ASKPASS) {
                const char *askpass;
@@ -48,12 +54,15 @@ char *git_prompt(const char *prompt, int flags)
                if (!askpass)
                        askpass = getenv("SSH_ASKPASS");
                if (askpass && *askpass)
-                       return do_askpass(askpass, prompt);
+                       r = do_askpass(askpass, prompt);
        }
 
-       r = git_terminal_prompt(prompt, flags & PROMPT_ECHO);
        if (!r)
-               die_errno("could not read '%s'", prompt);
+               r = git_terminal_prompt(prompt, flags & PROMPT_ECHO);
+       if (!r) {
+               /* prompts already contain ": " at the end */
+               die("could not read %s%s", prompt, strerror(errno));
+       }
        return r;
 }