[bug #64484] [troff] \X escape sequence should read its argument in copy mode

[Deri James]

Follow-up Comment #14, bug #64484 (group groff):

I am a bit concerned about this. pdf.tmac contains various .device commands,
which, if replaced by \X stop it working properly. I have shown previously
that gropdf is quite happy to receive groff nodes as 7 bit ascii i.e. the
character "â" can be sent to gropdf as \[u00E2] (preconv) or \[^a] (groff
special), both 7 bit clean. However, \X blocks both these uses with an error,
which is a little confusing to a user because it refers to "special character
'\^a'" even if \[u00E2] appears in the input to groff.

If I understand correctly, your plan is linked to the work you have been doing
with filenames (bug #65108, comment 3), which outlines your parsing rules. The
restriction in your rule 5d would prevent "strings" of characters in other
languages to be used. Many file systems allow utf-8 in filenames:-

-rw-r--r-- 1 derij derij         0 Aug 26 21:40  αβγ.greek

Which would fail 5d, and would prevent pdf bookmarks in any language except
basic latin or latin-1 supplement, if these rules are extended to .device.

Have I understood this correctly?



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