Improve clang-format vim integration.
The previous line-by-line replacement causes vim to take a long time if
the foldmethod is set to 'syntax'. This should significantly improve
performance in that case.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186660 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/clang-format/clang-format.py b/tools/clang-format/clang-format.py
index 60e2e55..29be72e 100644
--- a/tools/clang-format/clang-format.py
+++ b/tools/clang-format/clang-format.py
@@ -71,8 +71,8 @@
output = json.loads(lines[0])
lines = lines[1:]
if '\n'.join(lines) != text:
- for i in range(min(len(buf), len(lines))):
- buf[i] = lines[i]
+ common_length = min(len(buf), len(lines))
+ buf[:common_length] = lines[:common_length]
for line in lines[len(buf):]:
buf.append(line)
del buf[len(lines):]
