Heredocs are parsed line-by-line, so we need to keep track of the
temporary encoding of the string. Previously, a heredoc would
only detect mixed encoding errors if they were on the same line,
this changes things so they will be caught on different lines.
Added by jeremyevans (Jeremy Evans) about 6 years ago
Fix mixed encoding in heredoc
Heredocs are parsed line-by-line, so we need to keep track of the
temporary encoding of the string. Previously, a heredoc would
only detect mixed encoding errors if they were on the same line,
this changes things so they will be caught on different lines.
Fixes [Bug #15839]