precompose-utf8: do not call checks for non-ascii "utf8"

As suggested by Linus, this function is not checking UTF-8-ness of the
string; it only is seeing if it is pure US-ASCII.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/compat/precompose_utf8.c b/compat/precompose_utf8.c
index 3190d502bb553d425bfb2b0d8a1b5df6bde98b20..8cf59558e1c6fcc6782b8eaf94534ea041599191 100644 (file)
--- a/compat/precompose_utf8.c
+++ b/compat/precompose_utf8.c
@@ -13,20 +13,20 @@ typedef char *iconv_ibp;
 static const char *repo_encoding = "UTF-8";
 static const char *path_encoding = "UTF-8-MAC";
 
-static size_t has_utf8(const char *s, size_t maxlen, size_t *strlen_c)
+static size_t has_non_ascii(const char *s, size_t maxlen, size_t *strlen_c)
 {
-       const uint8_t *utf8p = (const uint8_t *)s;
+       const uint8_t *ptr = (const uint8_t *)s;
        size_t strlen_chars = 0;
        size_t ret = 0;
 
-       if (!utf8p || !*utf8p)
+       if (!ptr || !*ptr)
                return 0;
 
-       while (*utf8p && maxlen) {
-               if (*utf8p & 0x80)
+       while (*ptr && maxlen) {
+               if (*ptr & 0x80)
                        ret++;
                strlen_chars++;
-               utf8p++;
+               ptr++;
                maxlen--;
        }
        if (strlen_c)
@@ -77,7 +77,7 @@ void precompose_argv(int argc, const char **argv)
        while (i < argc) {
                size_t namelen;
                oldarg = argv[i];
-               if (has_utf8(oldarg, (size_t)-1, &namelen)) {
+               if (has_non_ascii(oldarg, (size_t)-1, &namelen)) {
                        newarg = reencode_string_iconv(oldarg, namelen, ic_precompose);
                        if (newarg)
                                argv[i] = newarg;
@@ -130,7 +130,7 @@ struct dirent_prec_psx *precompose_utf8_readdir(PREC_DIR *prec_dir)
                prec_dir->dirent_nfc->d_ino  = res->d_ino;
                prec_dir->dirent_nfc->d_type = res->d_type;
 
-               if ((precomposed_unicode == 1) && has_utf8(res->d_name, (size_t)-1, NULL)) {
+               if ((precomposed_unicode == 1) && has_non_ascii(res->d_name, (size_t)-1, NULL)) {
                        if (prec_dir->ic_precompose == (iconv_t)-1) {
                                die("iconv_open(%s,%s) failed, but needed:\n"
                                                "    precomposed unicode is not supported.\n"