Leave Git's :name and :/message arguments alone, please

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

winsup/cygwin/msys2_path_conv.cc

@@ -348,6 +348,12 @@ path_type find_path_start_and_type(const char** src, int recurse, const char* en
         return NONE;
     }
 
+    /*
+     * Prevent Git's :file.txt and :/message syntax from beeing modified.
+     */
+    if (*it == ':')
+        goto skip_p2w;
+
     while (!isalnum(*it) && *it != '/' && *it != '\\' && *it != ':' && *it != '-' && *it != '.') {
         recurse = true;
         it = ++*src;