Use a fixed width for info labels

It makes it look nicer when using --debug=config,sys and it makes it
easier to compare output between two different versions.

1 files changed, 2 insertions, 1 deletions

diff --git a/coverage/debug.py b/coverage/debug.py
index c516ac5b..ed6db680 100644
--- a/coverage/debug.py
+++ b/coverage/debug.py
@@ -114,7 +114,8 @@ def info_formatter(info):
     info = list(info)
     if not info:
         return
-    label_len = max(len(l) for l, _d in info)
+    label_len = 30
+    assert all(len(l) < label_len for l, _ in info)
     for label, data in info:
         if data == []:
             data = "-none-"