(Ffile_name_directory, Ffile_name_nondirectory)

[DOS_NT]: Handle the special construct "/:" when followed by d:foo.

diff --git a/src/fileio.c b/src/fileio.c
index 50abfd8988b3d7b99db953210cf886b14ef7c49f..5814e2794e5cd2449957e3d035d0af6d88cfd39f 100644 (file)
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -382,8 +382,11 @@ on VMS, perhaps instead a string ending in `:', `]' or `>'.")
         && p[-1] != ':' && p[-1] != ']' && p[-1] != '>'
 #endif /* VMS */
 #ifdef DOS_NT
-        /* only recognise drive specifier at beginning */
-        && !(p[-1] == ':' && p == beg + 2)
+        /* only recognise drive specifier at the beginning */
+        && !(p[-1] == ':'
+             /* handle the "/:d:foo" and "/:foo" cases correctly  */
+             && ((p == beg + 2 && !IS_DIRECTORY_SEP (*beg))
+                 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg))))
 #endif
         ) p--;
 
@@ -391,11 +394,20 @@ on VMS, perhaps instead a string ending in `:', `]' or `>'.")
     return Qnil;
 #ifdef DOS_NT
   /* Expansion of "c:" to drive and default directory.  */
-  if (p == beg + 2 && beg[1] == ':')
+  if (p[-1] == ':')
     {
       /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir.  */
       unsigned char *res = alloca (MAXPATHLEN + 1);
-      if (getdefdir (toupper (*beg) - 'A' + 1, res))
+      unsigned char *r = res;
+
+      if (p == beg + 4 && IS_DIRECTORY_SEP (*beg) && beg[1] == ':')
+       {
+         strncpy (res, beg, 2);
+         beg += 2;
+         r += 2;
+       }
+
+      if (getdefdir (toupper (*beg) - 'A' + 1, r))
        {
          if (!IS_DIRECTORY_SEP (res[strlen (res) - 1]))
            strcat (res, "/");
@@ -440,7 +452,9 @@ or the entire name if it contains no slash.")
 #endif /* VMS */
 #ifdef DOS_NT
         /* only recognise drive specifier at beginning */
-        && !(p[-1] == ':' && p == beg + 2)
+        && !(p[-1] == ':'
+             /* handle the "/:d:foo" case correctly  */
+             && (p == beg + 2 || (p == beg + 4 && IS_DIRECTORY_SEP (*beg))))
 #endif
         )
     p--;