Column checker: Also understand `: ::`.

.scripts/check-colon.py

@@ -5,25 +5,37 @@ from itertools import chain
 import polib
 
 
+def colon_is_visible(msg):
+    if msg.endswith(": ::"):
+        return True
+    if msg.endswith(" ::"):
+        return False
+    if msg.endswith("::"):
+        return True
+    raise ValueError("Don't know if msg ends with a visible or an invisible colon.")
+
+
 def check(file):
     check = '--check' in sys.argv
     pofile = polib.pofile(file)
     has_errors = False
     for entry in pofile:
         if not entry.msgstr:
-            continue
-        if entry.msgid.endswith(" ::"):
-            fixed = entry.msgstr.rstrip(":  \u202f\u00A0") + " ::"
-            if check and entry.msgstr != fixed:
-                print(f"{file}:{entry.linenum}: Expected translation to end with: ' ::'")
-                has_errors = True
-            entry.msgstr = fixed
-        elif entry.msgid.endswith("::"):
-            fixed = entry.msgstr.rstrip(": ,. \u202f\u00A0") + "\u00A0::"
-            if check and entry.msgstr != fixed:
-                print(rf"{file}:{entry.linenum}: Expected translation to end with: '\u00A0::'")
-                has_errors = True
-            entry.msgstr = fixed
+            continue  # No need to check untranslated entries.
+        if not entry.msgid.endswith("::"):
+            continue  # No need to work on entries not ending with a colon.
+        fixed = entry.msgstr.rstrip(": \u202f\u00A0")
+        if colon_is_visible(entry.msgid):
+            fixed += "\u00A0::"
+            message = r"Expected translation to end with: '\u00A0::'"
+        else:
+            fixed += " ::"
+            message = "Expected translation to end with: ' ::'"
+        if check and entry.msgstr != fixed:
+            print(f"{file}:{entry.linenum}: {message}")
+            has_errors = True
+        entry.msgstr = fixed
+
     if not check:
         pofile.save()
     return has_errors