[eqn] error: invalid input (character code 159)

[Alejandro Colomar]

Hi Branden,

Maybe it's just me, but I think there's overall consistency in software
about the difference between warning and error meaning that warnings
are recoverable conditions which are bad enough to be reported but not
bad enough to break hard, while errors are those for which you can't
recover at all.

eqn(1) seems to disagree with me :(.

$ touch man1/iconv.1
$ make tmp/lint/man1/iconv.1.troff V=1
LINT (tbl)      tmp/lint/man1/iconv.1.eqn
tbl man1/iconv.1 >tmp/lint/man1/iconv.1.eqn
LINT (eqn)      tmp/lint/man1/iconv.1.troff
eqn -Tutf8  <tmp/lint/man1/iconv.1.eqn >tmp/lint/man1/iconv.1.troff
eqn:man1/iconv.1:178: error: invalid input (character code 159)
eqn:man1/iconv.1:178: error: invalid input (character code 130)
eqn:man1/iconv.1:178: error: invalid input (character code 131)
$ echo $?
0


I would expect to either see "warning", or that it would exit with a
failure (nonzero) error code.  And hopefully, I would be able to enable
that nonzero exit code with a flag if not by default.

On the other hand, I wonder what's wrong with my commands.  man(1) is
able to translate the characters correctly, while groff(1) doesn't.  I
guess I'm missing some flags to eqn(1) maybe?


$ man ./man1/iconv.1  | grep '\$'
           $ iconv -f ISO-8859-15 -t UTF-8 < input.txt > output.txt
           $ echo abc ß α € àḃç | iconv -f UTF-8 -t ASCII//TRANSLIT
$ groff -man -Tutf8 ./man1/iconv.1  | grep '\$'
           $ iconv -f ISO-8859-15 -t UTF-8 < input.txt > output.txt
           $ echo abc à α ⬠à á¸Ã§ | iconv -f UTF-8 -t ASCII//TRANSLIT
$ /usr/bin/groff -man -Tutf8 ./man1/iconv.1  | grep '\$'
           $ iconv -f ISO-8859-15 -t UTF-8 < input.txt > output.txt
           $ echo abc à α ⬠à á¸Ã§ | iconv -f UTF-8 -t ASCII//TRANSLIT

Cheers,

Alex

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