KS2011: Structured error logging

KS2011: Structured error logging

Posted Oct 25, 2011 8:21 UTC (Tue) by l0b0 (subscriber, #80670)
In reply to: KS2011: Structured error logging by liljencrantz
Parent article: KS2011: Structured error logging

You also need to account for the fact that you might have an even or odd number of backslashes before the quote:

echo '"foo \"bar\" baz"' | grep -E '"([^"]|\\.)*"' # Succeeds
echo '"foo \"bar\\" baz"' | grep -E '"([^"]|\\.)*"' # Ouch, that's a literal backslash, not an escaped quote!

To fix it, we would need to check that any quotes are preceded by an *odd* number of backslashes:

"([^"]|(?<=\\(\\\\)*)")*"

Unfortunately this doesn't work with grep -P ("lookbehind assertion is not fixed length"). I don't know if any other regex engines support this.

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