CVS log for mandoc/regress/roff/shift/bad.in

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Default branch: MAIN
Current tag: MAIN

Revision 1.2 / (download) - annotate - [select for diffs], Sun Apr 24 13:38:48 2022 UTC (2 years, 1 month ago) by schwarze
Branch: MAIN
CVS Tags: HEAD
Changes since 1.1: +6 -2 lines
Diff to previous 1.1 (colored) 

If a .shift request has a negative argument, do not use a negative array
index but use 0 instead of the argument, just like groff.
Warn about the invalid argument.
While here, fix the column number in another warning message.

Segfault reported by tb@, found with afl(1).

Revision 1.1 / (download) - annotate - [select for diffs], Thu Aug 23 14:29:42 2018 UTC (5 years, 9 months ago) by schwarze
Branch: MAIN
CVS Tags: VERSION_1_14_6, VERSION_1_14_5 

Implement the roff(7) .shift and .return requests,
for example used by groff_hdtbl(7) and groff_mom(7).

Also correctly interpolate arguments during nested macro execution
even after .shift and .return, implemented using a stack of argument
arrays.

Note that only read.c, but not roff.c can detect the end of a macro
execution, and the existence of .shift implies that arguments cannot
be interpolated up front, so unfortunately, this includes a partial
revert of roff.c rev. 1.337, moving argument interpolation back into
the function roff_res().

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