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-rw-r--r--lib/diff/lcs/htmldiff.rb4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/diff/lcs/htmldiff.rb b/lib/diff/lcs/htmldiff.rb
index 56b972c..8b79994 100644
--- a/lib/diff/lcs/htmldiff.rb
+++ b/lib/diff/lcs/htmldiff.rb
@@ -115,8 +115,8 @@ h1 { margin-left: 2em; }
formatter = Text::Format.new
formatter.tabstop = @options[:expand_tabs]
- @left = left.map { |line| formatter.expand(line.chomp) }
- @right = right.map { |line| formatter.expand(line.chomp) }
+ @left.map! { |line| formatter.expand(line.chomp) }
+ @right.map! { |line| formatter.expand(line.chomp) }
end
@left.map! { |line| CGI.escapeHTML(line.chomp) }