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authorIngo Schwarze <schwarze@openbsd.org>2022-04-13 13:19:34 +0000
committerIngo Schwarze <schwarze@openbsd.org>2022-04-13 13:19:34 +0000
commit9460c128e40f65cfb15e776c2d51ea26f06b4ef7 (patch)
tree3212a93c32b0047172cb9d3c5c563ceb4fbab6c0 /man_macro.c
parent1bc6096c6e64021749cdac6c1bf7fa2d71336bf3 (diff)
downloadmandoc-9460c128e40f65cfb15e776c2d51ea26f06b4ef7.tar.gz
Surprisingly, groff supports multiple copy mode escapes at the
beginning of an escape sequence: \, \E, \EE, \EEE, and so on all do the same outside copy mode, so let them do the same in mandoc(1), too. This fixes an assertion failure triggered by \EE*X that tb@ found with afl(1). The first E was consumed by roff_expand(), but that function failed to recognize the escape sequence as the expansion of a user-defined string and handed it over to mandoc_escape(), which consumed the second E and then died on an assertion because it is not prepared to handle user-defined strings. Fix this by letting *both* functions handle arbitrary numbers of 'E's correctly.
Diffstat (limited to 'man_macro.c')
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