Follow-up Comment #3, bug #59932 (group groff): At 2025-06-19T03:35:03-0400, Dave wrote: > Follow-up Comment #2, bug #59932 (group groff): > > This is not documented, but another typographical limitation of a > .char definition is that it defeats even explicit requests to kern > with italic correction. Observe the typeset output of: > > .nf > (\fIpilaf\fP) > (\fIpilaf\fP\/) > .char \[af] af > (\fIpil\[af]\fP\/)
Slightly altering your input, we can almost as easily illustrate your
point without requring a PDF viewer.
$ cat ATTIC/59932-kerning.groff
.nf
\!# line one
(\fIpilaf\fP)
\!# line two
(\fIpilaf\fP\/)
\!# line three
.char \[af] af
(\fIpil\[af]\fP\/)
$ groff -Z ATTIC/59932-kerning.groff
x T ps
x res 72000 1 1
x init
p1
# line one
x font 5 TR
f5
s10000
md
DFd
V12000
H72000
t(
x font 40 TI
f40
tpilaf
f5
t)
n12000 0
# line two
V24000
H72000
t(
f40
tpilaf
f5
h1960
t)
n12000 0
# line three
V36000
H72000
t(
f40
tpilaf
f5
t)
n12000 0
x trailer
V792000
x stop
The `h1960` command ("move right by 1960 basic units"), applying the
italic correction, occurs on line two but not lines one or three.
I then added `.pchar \[af]` to the end of your document, because I
wanted to inspect the user-defined character's innards, and got the
following marvelous surprise.
special character "af"
is not translated
has a macro: "file name": "ATTIC\/59932-kerning.groff", "starting line
number": 7, "length": 2, "contents": "af", "node list": troff:
../src/roff/troff/node.cpp:2549: void dump_node_list(node*): Assertion `n !=
0' failed.
groff: error: troff: Aborted (core dumped)
Something for me to look into, then.
_______________________________________________________
Reply to this item at:
<https://savannah.gnu.org/bugs/?59932>
_______________________________________________
Message sent via Savannah
https://savannah.gnu.org/
signature.asc
Description: PGP signature
