[bug #65585] [gropdf] problems introduced by commit cd9fde325f

[G. Branden Robinson]

Follow-up Comment #7, bug #65585 (group groff):

[comment #2 comment #2:]
> The only thing I think which is still missing is the proper SS font for
devpdf, which produces "more perfect" typeset equations.

Yes, I want that in _groff_ 1.24 as well.  It's on my to-merge list.
 
> For the NEWS file perhaps you can use some of the information in the
attached pdf.

I think that's a good idea.

> My condolences for your bereavement.

Thank you.


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[bug #65601] Bogus 'bogus composite' errors introduced by commit 6008b6b7aa

[Deri James]

URL:
  

 Summary: Bogus 'bogus composite' errors introduced by commit
6008b6b7aa
   Group: GNU roff
   Submitter: deri
   Submitted: Tue 16 Apr 2024 11:21:28 AM UTC
Category: Core
Severity: 3 - Normal
  Item Group: Incorrect behaviour
  Status: None
 Privacy: Public
 Assigned to: None
 Open/Closed: Open
 Discussion Lock: Any
 Planned Release: None


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Follow-up Comments:


---
Date: Tue 16 Apr 2024 11:21:28 AM UTC By: Deri James 
If preconv produces a valid composite character groff should not reject it. Of
course if the composite is not available in any available font it will elicit
the normal "not defined" error, but, if it is, this bug prevents it being
used. I have many examples including these using groff -man on some man
pages:-

troff:charsets.7:76: error: cannot format glyph: 'u0073_0326' is not a valid
composite character
troff:charsets.7:76: error: cannot format glyph: 'u0074_0326' is not a valid
composite character
troff:iso_8859-6.7:54: error: cannot format glyph: 'u0627_0653' is not a valid
composite character
troff:iso_8859-6.7:55: error: cannot format glyph: 'u0627_0654' is not a valid
composite character
troff:iso_8859-6.7:56: error: cannot format glyph: 'u0648_0654' is not a valid
composite character
troff:iso_8859-6.7:57: error: cannot format glyph: 'u0627_0655' is not a valid
composite character
troff:iso_8859-6.7:58: error: cannot format glyph: 'u064A_0654' is not a valid
composite character
troff:iso_8859-6.7:54: error: cannot format glyph: 'u0627_0653' is not a valid
composite character
troff:iso_8859-6.7:55: error: cannot format glyph: 'u0627_0654' is not a valid
composite character
troff:iso_8859-6.7:56: error: cannot format glyph: 'u0648_0654' is not a valid
composite character
troff:iso_8859-6.7:57: error: cannot format glyph: 'u0627_0655' is not a valid
composite character
troff:iso_8859-6.7:58: error: cannot format glyph: 'u064A_0654' is not a valid
composite character
troff:iso_8859-16.7:56: error: cannot format glyph: 'u0053_0326' is not a
valid composite character
troff:iso_8859-16.7:72: error: cannot format glyph: 'u0073_0326' is not a
valid composite character
troff:iso_8859-16.7:108: error: cannot format glyph: 'u0054_0326' is not a
valid composite character
troff:iso_8859-16.7:140: error: cannot format glyph: 'u0074_0326' is not a
valid composite character
troff:iso_8859-16.7:56: error: cannot format glyph: 'u0053_0326' is not a
valid composite character
troff:iso_8859-16.7:72: error: cannot format glyph: 'u0073_0326' is not a
valid composite character
troff:iso_8859-16.7:108: error: cannot format glyph: 'u0054_0326' is not a
valid composite character
troff:iso_8859-16.7:140: error: cannot format glyph: 'u0074_0326' is not a
valid composite character

Even nroff -T utf8 can't reproduce the man page properly!

xzcat /usr/share/man/man7/iso_8859-6.7.xz |preconv|nroff -Tutf8 -man -t -z

Personally I see little value in this error, the existing error reporting of a
special character not defined is more helpful since if you find a font which
contains the correct glyph, the error will be gone. I'm sure there are users
capable of creating a font with all sorts of weird composite glyphs, why
should we police what they can do?








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