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[Qemu-devel] [PATCH v2] checkpatch: Fix whitespace checks for documentat


From: Lluís Vilanova
Subject: [Qemu-devel] [PATCH v2] checkpatch: Fix whitespace checks for documentation code blocks
Date: Wed, 7 Sep 2016 14:49:04 +0200
User-agent: StGit/0.17.1-dirty

Prevent blank lines in documentation code blocks to be signalled as
incorrect trailing whitespace.

Code blocks in documentation are 4-column aligned, and blank lines in
them should have exactly 4 columns of trailing whitespace to prevent
QEMU's wiki to render them as separate code blocks.

Signed-off-by: Lluís Vilanova <address@hidden>
---
 scripts/checkpatch.pl |   10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index b0096a4..dde3f5f 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1320,6 +1320,16 @@ sub process {
                        my $herevet = "$here\n" . cat_vet($rawline) . "\n";
                        ERROR("DOS line endings\n" . $herevet);
 
+               } elsif ($realfile =~ /^docs\/.+\.txt/ ||
+                        $realfile =~ /^docs\/.+\.md/) {
+                   if ($rawline =~ /^\+\s+$/ && $rawline !~ /^\+ {4}$/) {
+                       # TODO: properly check we're in a code block
+                       #       (surrounding text is 4-column aligned)
+                       my $herevet = "$here\n" . cat_vet($rawline) . "\n";
+                       ERROR("code blocks in documentation should have " .
+                             "empty lines with exactly 4 columns of " .
+                             "whitespace\n" . $herevet);
+                   }
                } elsif ($rawline =~ /^\+.*\S\s+$/ || $rawline =~ /^\+\s+$/) {
                        my $herevet = "$here\n" . cat_vet($rawline) . "\n";
                        ERROR("trailing whitespace\n" . $herevet);




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