linux-kernel - [PATCH 3/3] kernel-doc: Don't mangle whitespace in Example section

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Message-Id: <1348875178-28490-4-git-send-email-daniel.santos@pobox.com>
Date:	Fri, 28 Sep 2012 18:32:58 -0500
From:	Daniel Santos <daniel.santos@...ox.com>
To:	LKML <linux-kernel@...r.kernel.org>, linux-doc@...r.kernel.org,
	Randy Dunlap <rdunlap@...otime.net>
Cc:	Daniel Santos <daniel.santos@...ox.com>
Subject: [PATCH 3/3] kernel-doc: Don't mangle whitespace in Example section

A section with the name "Example" (case-insensitive) has a special
meaning to kernel-doc.  These sections are output using mono-type fonts.
However, leading whitespace is stripped, thus robbing a lot of meaning
from this, as indented code examples will be mangled.

This patch preserves the leading whitespace for "Example" sections.
More accurately, it preserves it for all sections, but removes it later
if the section isn't an "Example" section.

Signed-off-by: Daniel Santos <daniel.santos@...ox.com>
---
 scripts/kernel-doc |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/scripts/kernel-doc b/scripts/kernel-doc
index 2be2078..46e7aff 100755
--- a/scripts/kernel-doc
+++ b/scripts/kernel-doc
@@ -296,9 +296,10 @@ my $doc_special = "\@\%\$\&";
 my $doc_start = '^/\*\*\s*$'; # Allow whitespace at end of comment start.
 my $doc_end = '\*/';
 my $doc_com = '\s*\*\s*';
+my $doc_com_body = '\s*\* ?';
 my $doc_decl = $doc_com . '(\w+)';
 my $doc_sect = $doc_com . '([' . $doc_special . ']?[\w\s]+):(.*)';
-my $doc_content = $doc_com . '(.*)';
+my $doc_content = $doc_com_body . '(.*)';
 my $doc_block = $doc_com . 'DOC:\s*(.*)?';
 
 my %constants;
@@ -486,6 +487,9 @@ sub output_highlight {
 	$contents =~ s/\s+$//;
     }
     foreach $line (split "\n", $contents) {
+	if (! $output_preformatted) {
+	    $line =~ s/^\s*//;
+	}
 	if ($line eq ""){
 	    if (! $output_preformatted) {
 		print $lineprefix, local_unescape($blankline);
@@ -2344,7 +2348,7 @@ sub process_file($) {
 		    $descr= $1;
 		    $descr =~ s/^\s*//;
 		    $descr =~ s/\s*$//;
-		    $descr =~ s/\s+/ /;
+		    $descr =~ s/\s+/ /g;
 		    $declaration_purpose = xml_escape($descr);
 		    $in_purpose = 1;
 		} else {
@@ -2436,6 +2440,7 @@ sub process_file($) {
 		    # Continued declaration purpose
 		    chomp($declaration_purpose);
 		    $declaration_purpose .= " " . xml_escape($1);
+		    $declaration_purpose =~ s/\s+/ /g;
 		} else {
 		    $contents .= $1 . "\n";
 		}
-- 
1.7.3.4

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