Also detect makefiles as plain text files

kitty/guess_mime_type.py

@@ -41,9 +41,14 @@
 )
 
 
-def is_rc_file(path: str) -> bool:
+def is_special_file(path: str) -> Optional[str]:
     name = os.path.basename(path)
-    return '.' not in name and name.endswith('rc')
+    lname = name.lower()
+    if lname == 'makefile' or lname.startswith('makefile.'):
+        return 'text/makefile'
+    if '.' not in name and name.endswith('rc'):
+        return 'text/plain'  # rc file
+    return None
 
 
 def is_folder(path: str) -> bool:
@@ -90,8 +95,7 @@ def guess_type(path: str, allow_filesystem_access: bool = False) -> Optional[str
         mt = known_extensions.get(ext)
     if mt in text_mimes:
         mt = f'text/{mt.split("/", 1)[-1]}'
-    if not mt and is_rc_file(path):
-        mt = 'text/plain'
+    mt = mt or is_special_file(path)
     if not mt:
         if is_dir:
             mt = 'inode/directory'  # type: ignore

tools/utils/mimetypes.go

@@ -54,9 +54,16 @@ var UserMimeMap = Once(func() map[string]string {
 	return ans
 })
 
-func is_rcfile(path string) bool {
+func is_special_file(path string) string {
 	name := filepath.Base(path)
-	return strings.HasSuffix(name, "rc") && !strings.Contains(name, ".")
+	lname := strings.ToLower(name)
+	if lname == "makefile" || strings.HasPrefix(lname, "makefile.") {
+		return "text/makefile"
+	}
+	if strings.HasSuffix(name, "rc") && !strings.Contains(name, ".") {
+		return "text/plain"
+	}
+	return ""
 }
 
 func GuessMimeType(filename string) string {
@@ -74,8 +81,8 @@ func GuessMimeType(filename string) string {
 			if mime_with_parameters == "" {
 				mime_with_parameters = KnownExtensions[lext]
 			}
-			if mime_with_parameters == "" && is_rcfile(filename) {
-				mime_with_parameters = "text/plain"
+			if mime_with_parameters == "" {
+				mime_with_parameters = is_special_file(filename)
 			}
 			if mime_with_parameters == "" {
 				return ""