cmdline: silently ignore ``BrokenPipeError``

This has come up a few times, and I see no good reason to catch
and report this error.

Fixes #2193

1 files changed, 3 insertions, 0 deletions

diff --git a/pygments/cmdline.py b/pygments/cmdline.py
index f25b1e83..1fdf335a 100644
--- a/pygments/cmdline.py
+++ b/pygments/cmdline.py
@@ -638,6 +638,9 @@ def main(args=sys.argv):
 
     try:
         return main_inner(parser, argns)
+    except BrokenPipeError:
+        # someone closed our stdout, e.g. by quitting a pager.
+        return 0
     except Exception:
         if argns.v:
             print(file=sys.stderr)