grep docs: pluralize "Example" section

[git.git] / path.c

diff --git a/path.c b/path.c
index 2ec950b27f1c3e4919ce7d1696360c5a49abb724..e166d5380e47a7f6560f504de6550a508de1e170 100644 (file)
--- a/path.c
+++ b/path.c
@@ -394,17 +394,38 @@ int set_shared_perm(const char *path, int mode)
 const char *make_relative_path(const char *abs, const char *base)
 {
        static char buf[PATH_MAX + 1];
-       int baselen;
-       if (!base)
-               return abs;
-       baselen = strlen(base);
-       if (prefixcmp(abs, base))
+       int i = 0, j = 0;
+
+       if (!base || !base[0])
                return abs;
-       if (abs[baselen] == '/')
-               baselen++;
-       else if (base[baselen - 1] != '/')
+       while (base[i]) {
+               if (is_dir_sep(base[i])) {
+                       if (!is_dir_sep(abs[j]))
+                               return abs;
+                       while (is_dir_sep(base[i]))
+                               i++;
+                       while (is_dir_sep(abs[j]))
+                               j++;
+                       continue;
+               } else if (abs[j] != base[i]) {
+                       return abs;
+               }
+               i++;
+               j++;
+       }
+       if (
+           /* "/foo" is a prefix of "/foo" */
+           abs[j] &&
+           /* "/foo" is not a prefix of "/foobar" */
+           !is_dir_sep(base[i-1]) && !is_dir_sep(abs[j])
+          )
                return abs;
-       strcpy(buf, abs + baselen);
+       while (is_dir_sep(abs[j]))
+               j++;
+       if (!abs[j])
+               strcpy(buf, ".");
+       else
+               strcpy(buf, abs + j);
        return buf;
 }
 
@@ -589,7 +610,7 @@ int daemon_avoid_alias(const char *p)
        /*
         * This resurrects the belts and suspenders paranoia check by HPA
         * done in <435560F7.4080006@zytor.com> thread, now enter_repo()
-        * does not do getcwd() based path canonicalizations.
+        * does not do getcwd() based path canonicalization.
         *
         * sl becomes true immediately after seeing '/' and continues to
         * be true as long as dots continue after that without intervening