grep: make it clear i-t-a entries are ignored

diff --git a/utf8.c b/utf8.c
index 9a3f4ad23293bf6a3fc06a1942fd324fa1b74ded..520fbb4994ab1bdcfa0bc4589a0ca5131a89c490 100644 (file)
--- a/utf8.c
+++ b/utf8.c
@@ -563,8 +563,8 @@ int mbs_chrlen(const char **text, size_t *remainder_p, const char *encoding)
 }
 
 /*
- * Pick the next char from the stream, folding as an HFS+ filename comparison
- * would. Note that this is _not_ complete by any means. It's just enough
+ * Pick the next char from the stream, ignoring codepoints an HFS+ would.
+ * Note that this is _not_ complete by any means. It's just enough
  * to make is_hfs_dotgit() work, and should not be used otherwise.
  */
 static ucs_char_t next_hfs_char(const char **in)
@@ -601,12 +601,7 @@ static ucs_char_t next_hfs_char(const char **in)
                        continue;
                }
 
-               /*
-                * there's a great deal of other case-folding that occurs,
-                * but this is enough to catch anything that will convert
-                * to ".git"
-                */
-               return tolower(out);
+               return out;
        }
 }
 
@@ -614,10 +609,23 @@ int is_hfs_dotgit(const char *path)
 {
        ucs_char_t c;
 
-       if (next_hfs_char(&path) != '.' ||
-           next_hfs_char(&path) != 'g' ||
-           next_hfs_char(&path) != 'i' ||
-           next_hfs_char(&path) != 't')
+       c = next_hfs_char(&path);
+       if (c != '.')
+               return 0;
+       c = next_hfs_char(&path);
+
+       /*
+        * there's a great deal of other case-folding that occurs
+        * in HFS+, but this is enough to catch anything that will
+        * convert to ".git"
+        */
+       if (c != 'g' && c != 'G')
+               return 0;
+       c = next_hfs_char(&path);
+       if (c != 'i' && c != 'I')
+               return 0;
+       c = next_hfs_char(&path);
+       if (c != 't' && c != 'T')
                return 0;
        c = next_hfs_char(&path);
        if (c && !is_dir_sep(c))