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, 6 insertions, 1 deletions

diff --git a/src/heretic/d_main.c b/src/heretic/d_main.c
index 2a57016f..beb876ca 100644
--- a/src/heretic/d_main.c
+++ b/src/heretic/d_main.c
@@ -1001,9 +1001,12 @@ void D_DoomMain(void)
 
     if (p)
     {
+        char *uc_filename = strdup(myargv[p + 1]);
+        M_ForceUppercase(uc_filename);
+
         // In Vanilla, the filename must be specified without .lmp,
         // but make that optional.
-        if (M_StringEndsWith(myargv[p + 1], ".lmp"))
+        if (M_StringEndsWith(uc_filename, ".LMP"))
         {
             M_StringCopy(file, myargv[p + 1], sizeof(file));
         }
@@ -1012,6 +1015,8 @@ void D_DoomMain(void)
             DEH_snprintf(file, sizeof(file), "%s.lmp", myargv[p + 1]);
         }
 
+        free(uc_filename);
+
         if (D_AddFile(file))
         {
             M_StringCopy(demolumpname, lumpinfo[numlumps - 1].name,