Follow-up Comment #15, bug #66040 (group groff): I've got some new stuff on the cooker.
commit bc4036b10995058cce7a96949ca13ca2dcb96496 (HEAD)
Author: G. Branden Robinson <g.branden.robin...@gmail.com>
Date: Thu Aug 1 16:45:35 2024 -0500
[troff]: Validate `hcode` request arguments more.
* src/roff/troff/input.cpp (set_hyphenation_code): Do more input
validation of `hcode` request arguments. Handle case where an
argument is an escape sequence (but not a special character) ourselves
instead of delegating it to `token::get_char()`. Throw errors when
(1) the destination character is a numeral; (2) the destination
character is a (non-special-character) escape sequence; (3) the source
character is a numeral; and (4) the source character is a
(non-special-character) escape sequence. Improve wording of existing
diagnostic, noting validity of special character escape sequence as a
source character _if_ it has already been assigned a hyphenation code
(implicitly: a non-zero one).
* doc/groff.texi.in (Manipulating Hyphenation) <hcode>:
* man/groff_diff.7.man (New requests) <hcode>: Document that the request
aborts processing its arguments upon encountering an invalid one.
Continues <https://savannah.gnu.org/bugs/?66040>. Thanks to Dave Kemper
for further discussion.
$ nl hcode.groff
1 .hcode
2 .hcode \:
3 .hcode a
4 .hcode 0 b
5 .hcode c\:
6 .hcode \['A] \['a]
7 .hcode d 0
8 .hcode eE
9 .hcode f F
10 .hcode g G\" This is my comment.
11 .hcode \['i] i
12 .hcode \['o] \['o]
13 .hcode \['u] u
14 .hcode \['U] \['u]
$ ./build/test-groff -T utf8 -ww hcode.groff
troff:hcode.groff:1: warning: hyphenation code configuration request
expects arguments
troff:hcode.groff:2: error: expected ordinary or special character, got an
escaped ':'
troff:hcode.groff:3: error: hyphenation codes must be specified in pairs
troff:hcode.groff:4: error: cannot apply a hyphenation code to a numeral
troff:hcode.groff:5: error: expected ordinary or special character, got an
escaped ':'
troff:hcode.groff:6: error: second member of hyphenation code pair must be
an ordinary character, or a special character already assigned a hyphenation
code
troff:hcode.groff:7: error: cannot use the hyphenation code of a numeral
troff:hcode.groff:12: error: second member of hyphenation code pair must
be an ordinary character, or a special character already assigned a
hyphenation code
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