Follow-up Comment #33, bug #63354 (group groff):
Bjarni's proposed \[u2012] definition in comment #26 has two problems.
* It relies on a register (lfiguredash) that calculates the width of a zero
and a hair space based on the font size at the time the register is defined.
This value will thus be incorrect at any other font size used later in the
document.
* It emits an extraneous apostrophe. This input:
.nr lfiguredash \w'0'u-(2*\w'\^'u)
.char \[u2012] \^\v'-0.3m'\D'l \n[lfiguredash]u 0m'\v'0.3m\^'
.rm lfiguredash
.
1\[u2012]2\[u2012]3
produces the attached typeset output.
(file #55773)
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