Fix indentation-stripping in `"""` strings
`"""` (and `"`) strings are lexed into an array of tokens, consisting of strings and interpolations. Previously, the minimum indententation inside `"""` strings was stripped from the beginning of _all_ of those string tokens. Usually, the indentation is longer than any other sequence of spaces in a `"""` string, so the problem didn't occur in most cases. This commit makes sure to only strip indentation after newlines. Fixes #4314.
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@ -267,22 +267,22 @@
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}
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}
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if (indent) {
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indentRegex = RegExp("^" + indent, "gm");
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indentRegex = RegExp("\\n" + indent, "g");
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}
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this.mergeInterpolationTokens(tokens, {
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delimiter: delimiter
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}, (function(_this) {
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return function(value, i) {
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value = _this.formatString(value);
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if (indentRegex) {
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value = value.replace(indentRegex, '\n');
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}
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if (i === 0) {
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value = value.replace(LEADING_BLANK_LINE, '');
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}
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if (i === $) {
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value = value.replace(TRAILING_BLANK_LINE, '');
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}
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if (indentRegex) {
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value = value.replace(indentRegex, '');
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}
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return value;
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};
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})(this));
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@ -248,12 +248,12 @@ exports.Lexer = class Lexer
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while match = HEREDOC_INDENT.exec doc
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attempt = match[1]
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indent = attempt if indent is null or 0 < attempt.length < indent.length
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indentRegex = /// ^#{indent} ///gm if indent
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indentRegex = /// \n#{indent} ///g if indent
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@mergeInterpolationTokens tokens, {delimiter}, (value, i) =>
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value = @formatString value
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value = value.replace indentRegex, '\n' if indentRegex
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value = value.replace LEADING_BLANK_LINE, '' if i is 0
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value = value.replace TRAILING_BLANK_LINE, '' if i is $
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value = value.replace indentRegex, '' if indentRegex
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value
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else
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@mergeInterpolationTokens tokens, {delimiter}, (value, i) =>
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@ -390,3 +390,13 @@ test "#3795: Escape otherwise invalid characters", ->
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eq """#{a}
""", 'a\u2029'
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eq """#{a}\0\
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1""", 'a\0' + '1'
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test "#4314: Whitespace less than or equal to stripped indentation", ->
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# The odd indentation is intentional here, to test 1-space indentation.
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eq ' ', """
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#{} #{}
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"""
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eq '1 2 3 4 5 end\na 0 b', """
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#{1} #{2} #{3} #{4} #{5} end
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a #{0} b"""
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