Perform case-insensitive check for .lmp extension.

When using the -playdemo parameter, we support a convenience feature
where the .lmp extension is not appended if it is already part of the
filename. This makes tab completion much nicer. But if the .lmp file
has a filename that is in all-caps (.LMP) we were still appending the
extension because the check was case sensitive. Change the check to
be case insensitive.

This fixes #501 (thanks Ioan Chera).

1 files changed, 7 insertions, 1 deletions

diff --git a/src/hexen/h2_main.c b/src/hexen/h2_main.c
index 7084ceec..1786a1fb 100644
--- a/src/hexen/h2_main.c
+++ b/src/hexen/h2_main.c
@@ -623,17 +623,23 @@ static void HandleArgs(void)
 
     if (p)
     {
+        char *uc_filename;
         char file[256];
 
         M_StringCopy(file, myargv[p+1], sizeof(file));
 
         // With Vanilla Hexen you have to specify the file without
         // extension, but make that optional.
-        if (!M_StringEndsWith(myargv[p+1], ".lmp"))
+        uc_filename = strdup(myargv[p + 1]);
+        M_ForceUppercase(uc_filename);
+
+        if (!M_StringEndsWith(uc_filename, ".LMP"))
         {
             M_StringConcat(file, ".lmp", sizeof(file));
         }
 
+        free(uc_filename);
+
         if (W_AddFile(file) != NULL)
         {
             M_StringCopy(demolumpname, lumpinfo[numlumps - 1].name,