Nick Treleaven:

Just curious, would it be much work to support multiple line regex
matching, or would that require many code changes? I and several other
scintilla users would much appreciate it.

   I think it is a lot of work. I can't recall all the details but do
remember that when implementing searching there were many
infinite-loop bugs in the regular expression code that took a lot of
work to fix. A major problem is in handling ^ and $ with the RE
library treating these as start of text / end of text rather than
start of line / end of line. There are also issues with allowing line
ends to be any of \r, \n, or \r\n.

  Neil
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