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Fix compatibility with --enable-frozen-string-literal #171

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Fix compatibility with --enable-frozen-string-literal #171

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4 changes: 4 additions & 0 deletions .github/workflows/ruby.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@ jobs:
- 3.2
- 3.3
- 3.4
- 4.0
- head

steps:
Expand All @@ -36,3 +37,6 @@ jobs:
env:
COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
run: bundle exec rake spec
env:
RUBYOPT: "--enable-frozen-string-literal --debug-frozen-string-literal"

2 changes: 1 addition & 1 deletion lib/docx/containers/paragraph.rb
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Expand Up @@ -44,7 +44,7 @@ def to_s

# Return paragraph as a <p></p> HTML fragment with formatting based on properties.
def to_html
html = ''
html = +''
text_runs.each do |text_run|
html << text_run.to_html
end
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