Add ISDIRSEP() helper macro and use it

Create a ISDIRSEP() macro to check for directory separator chars
using the stopchar_map, and replace inline checks and explicit
STOP_SET calls with this macro.

* src/makeint.h (ISDIRSEP): Create the macro using MAP_DIRSEP.
* src/dir.c (find_directory): Replace inline checks with ISDIRSEP.
(file_exists_p): Ditto.
(file_impossible): Ditto.
(file_impossible_p): Ditto.
(local_stat): Ditto.
* src/file.c (lookup_file): Ditto.
* src/function.c (abspath): Ditto.
* src/job.c (_is_unixy_shell): Ditto.
(is_bourne_compatible_shell): Ditto.
(construct_command_argv): Ditto.
* src/main.c (find_and_set_default_shell): Ditto.
(main): Ditto.
* src/read.c (eval): Ditto.
(parse_file_seq): Ditto.
* src/remake.c (name_mtime): Ditto.
* src/vpath.c (construct_vpath_list): Ditto.

1 files changed, 2 insertions, 12 deletions

diff --git a/src/file.c b/src/file.c
index 62b8dd00..d2ee2c68 100644
--- a/src/file.c
+++ b/src/file.c
@@ -108,20 +108,10 @@ lookup_file (const char *name)
   while (name[0] == '<' && name[1] == '>' && name[2] != '\0')
       name += 2;
 #endif
-  while (name[0] == '.'
-#ifdef HAVE_DOS_PATHS
-         && (name[1] == '/' || name[1] == '\\')
-#else
-         && name[1] == '/'
-#endif
-         && name[2] != '\0')
+  while (name[0] == '.' && ISDIRSEP (name[1]) && name[2] != '\0')
     {
       name += 2;
-      while (*name == '/'
-#ifdef HAVE_DOS_PATHS
-             || *name == '\\'
-#endif
-             )
+      while (ISDIRSEP (*name))
         /* Skip following slashes: ".//foo" is "foo", not "/foo".  */
         ++name;
     }