tree 5d2ffeea5338af801b9c96c9755ae7753d0a16c6
parent 3a0d00eef992daafecc4d96fa716f851d8c9059a
author Alexander Kornienko <alexfh@google.com> 1368206151 +0000
committer Alexander Kornienko <alexfh@google.com> 1368206151 +0000

Better output for long help strings for command-line options.

Summary:
This patch allows using \n inside long help strings for command-line
options, so that all lines are equally indented. This is not a perfect solution,
as we don't (and probably don't want to) know about terminal width, but it
allows to format long help strings somehow readable without manually padding
them with spaces. A motivating example is -help output from clang-format (source
code in tools/clang-format/ClangFormat.cpp, see cl options offset, length,
style, and dump-config).

Reviewers: atrick, alexfh

Reviewed By: alexfh

CC: llvm-commits, rafael

Differential Revision: http://llvm-reviews.chandlerc.com/D779

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181608 91177308-0d34-0410-b5e6-96231b3b80d8