test-regex: isolate the bug test code

diff --git a/test-regex.c b/test-regex.c
index 0dc598ecdc2696af956b1c517166f9e28b37dc68..67a1a650672478d4453fcfe6272fad4be749fdd4 100644 (file)
--- a/test-regex.c
+++ b/test-regex.c
@@ -1,6 +1,6 @@
 #include "git-compat-util.h"
 
-int main(int argc, char **argv)
+static int test_regex_bug(void)
 {
        char *pat = "[^={} \t]+";
        char *str = "={}\nfred";
@@ -16,5 +16,13 @@ int main(int argc, char **argv)
        if (m[0].rm_so == 3) /* matches '\n' when it should not */
                die("regex bug confirmed: re-build git with NO_REGEX=1");
 
-       exit(0);
+       return 0;
+}
+
+int main(int argc, char **argv)
+{
+       if (argc == 2 && !strcmp(argv[1], "--bug"))
+               return test_regex_bug();
+       else
+               usage("test-regex --bug");
 }