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Fix parser translator with trailing backslash in %W /%I array #3584

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Fix parser translator with trailing backslash in %W /%I array #3584

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7 changes: 6 additions & 1 deletion lib/prism/translation/parser/lexer.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -425,7 +425,12 @@ def to_a
end

current_string << unescape_string(value, quote_stack.last)
if (backslash_count = token.value[/(\\{1,})\n/, 1]&.length).nil? || backslash_count.even? || !interpolation?(quote_stack.last)
relevant_backslash_count = if quote_stack.last.start_with?("%W", "%I")
0 # the last backslash escapes the newline
else
token.value[/(\\{1,})\n/, 1]&.length || 0
end
if relevant_backslash_count.even? || !interpolation?(quote_stack.last)
tokens << [:tSTRING_CONTENT, [current_string, range(start_offset, start_offset + current_length)]]
break
end
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