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Merge pull request #221 from stephenafamo/soft-line-break

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Fix logic for soft line breaks
This commit is contained in:
Yusuke Inuzuka 2021-05-16 22:25:13 +09:00 committed by GitHub
commit 43353aeea4
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 11 additions and 5 deletions
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16
parser/parser.go
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@ -1129,21 +1129,27 @@ func (p *parser) parseBlock(block text.BlockReader, parent ast.Node, pc Context)
break
}
lineLength := len(line)
softLinebreak := false
hardlineBreak := false
softLinebreak := line[lineLength-1] == '\n'
if lineLength >= 2 && line[lineLength-2] == '\\' && softLinebreak { // ends with \\n
hasNewLine := line[lineLength-1] == '\n'
if lineLength >= 2 && line[lineLength-2] == '\\' && hasNewLine { // ends with \\n
lineLength -= 2
hardlineBreak = true
} else if lineLength >= 3 && line[lineLength-3] == '\\' && line[lineLength-2] == '\r' && softLinebreak { // ends with \\r\n
} else if lineLength >= 3 && line[lineLength-3] == '\\' && line[lineLength-2] == '\r' && hasNewLine { // ends with \\r\n
lineLength -= 3
hardlineBreak = true
} else if lineLength >= 3 && line[lineLength-3] == ' ' && line[lineLength-2] == ' ' && softLinebreak { // ends with [space][space]\n
} else if lineLength >= 3 && line[lineLength-3] == ' ' && line[lineLength-2] == ' ' && hasNewLine { // ends with [space][space]\n
lineLength -= 3
hardlineBreak = true
} else if lineLength >= 4 && line[lineLength-4] == ' ' && line[lineLength-3] == ' ' && line[lineLength-2] == '\r' && softLinebreak { // ends with [space][space]\r\n
} else if lineLength >= 4 && line[lineLength-4] == ' ' && line[lineLength-3] == ' ' && line[lineLength-2] == '\r' && hasNewLine { // ends with [space][space]\r\n
lineLength -= 4
hardlineBreak = true
} else if hasNewLine {
// If the line ends with a newline character, but it is not a hardlineBreak, then it is a softLinebreak
// If the line ends with a hardlineBreak, then it cannot end with a softLinebreak
// See https://spec.commonmark.org/0.29/#soft-line-breaks
softLinebreak = true
}
l, startPosition := block.Position()