Check heredoc state for escaped newlines - #4219
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When escaped newlines are encountered, they are added to the newline list. We need to check that we aren't backing up to read the rest of the line because of a heredoc, in which case the newline would have already have been added to the list.
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When escaped newlines are encountered, they are added to the newline list. We need to check that we aren't backing up to read the rest of the line because of a heredoc, in which case the newline would have already have been added to the list.