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Let indx match netbsd flavor, to simplify diffs.
Show how many quotes were not closed.
Increase stack slightly, now that we're no longer bound by argspace.
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A bit wasteful, but not too intrusive.
Also remove pushback buffer limitations, as this would be mostly useless
otherwise.
Incidentally, pushback buffer overflow detection in pbstr was wrong.
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- use err.h and kill oops,
- use __progname and kill basename,
- let indx use strstr
- proper EOS decl
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that typedef 'short'. 'char' (which was previously used) because char
may be unsigned and ((char)EOF) != EOF if that is the case. That was
causing the (char)EOF (0xff) pushed back in main to be interepreted as
a character, and, in some cases, to be written to the output. 'short'
was used rather than 'signed char' because if the latter is used,
0xff characters in the input would confuse m4. (No point in introducing
(more?) 8-bit lossage.)
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Handle multichar comment and quote delimiters (up to 5 characters, per the
manual page). Takes care of PR#485.
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