awk: add comment about fixing bug 1333
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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@ -2060,6 +2060,8 @@ static int awk_sub(node *rn, const char *repl, int nm, var *src, var *dest, int
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//gsub(/\<b*/,"") on "abc" will reach this point, advance to "bc"
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//... and will erroneously match "b" even though it is NOT at the word start.
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//we need REG_NOTBOW but it does not exist...
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//TODO: if EXTRA_COMPAT=y, use GNU matching and re_search,
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//it should be able to do it correctly.
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/* Subtle: this is safe only because
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* qrealloc allocated at least one extra byte */
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resbuf[residx] = *sp;
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