Better detection of tab indentation.

"But surely nobody would indent by having spaces first,
and tabs after that. Right? Right?"

run_project_tests.py

@@ -702,9 +702,10 @@ def check_file(fname):
     linenum = 1
     with open(fname, 'rb') as f:
         lines = f.readlines()
+    tabdetector = re.compile(br' *\t')
     for line in lines:
-        if line.startswith(b'\t'):
-            print("File %s contains a literal tab on line %d. Only spaces are permitted." % (fname, linenum))
+        if re.match(tabdetector, line):
+            print("File %s contains a tab indent on line %d. Only spaces are permitted." % (fname, linenum))
             sys.exit(1)
         if b'\r' in line:
             print("File %s contains DOS line ending on line %d. Only unix-style line endings are permitted." % (fname, linenum))

test cases/frameworks/18 vulkan/vulkanprog.c

@@ -4,14 +4,14 @@
 int main()
 {
     VkInstanceCreateInfo instance_create_info = {
-        	VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO,
-        	NULL,
-        	0,
-        	NULL,
-        	0,
-        	NULL,
-        	0,
-        	NULL,
+            VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO,
+            NULL,
+            0,
+            NULL,
+            0,
+            NULL,
+            0,
+            NULL,
     };
 
     // we don't actually require instance creation to succeed since
@@ -23,4 +23,4 @@ int main()
         vkDestroyInstance(instance, NULL);
         
     return 0;    
-}
+}