From 817235cfbc3162e136d53ec5bffe234d4d87c79b Mon Sep 17 00:00:00 2001
From: Bruce Hill <bruce@bruce-hill.com>
Date: Fri, 6 Sep 2024 14:27:49 -0400
Subject: Check for .tm file extension

---
 tomo.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tomo.c b/tomo.c
index 728fb745..d30afc14 100644
--- a/tomo.c
+++ b/tomo.c
@@ -130,6 +130,8 @@ int main(int argc, char *argv[])
     Table_t argument_files = {};
 
     for (int i = after_flags; i < argc; i++) {
+        if (strlen(argv[i]) < 4 || strncmp(argv[i] + strlen(argv[i]) - 3, ".tm", 3) != 0)
+            errx(1, "Not a valid .tm file: \x1b[31;1m%s\x1b[m", argv[i]);
         const char *resolved = resolve_path(argv[i], ".", ".");
         if (!resolved) errx(1, "Couldn't resolve path: %s", argv[i]);
         Table$str_set(&argument_files, resolved, argv[i]);
-- 
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