[FLAC 1.5.0-1] Man pages use HYPHEN character instead of HYPHEN-MINUS.

[Brian Inglis]

On 2026-02-04 02:56, Vincent via Cygwin wrote:
> My request is related to an issue I opened in the FLAC Github :
> https://github.com/xiph/flac/issues/861
> 
> After some investigations, the issue is related to the build release of the
> FLAC package provided by Cygwin : the man pages of flac(1) and metaflac(1)
> use the HYPHEN (U+2010 )  character instead of the HYPHEN-MINUS  (U+002D)
> character.
> 
> These two commands expect HYPHEN-MINUS character, so if you copy-paste the
> man page options in your terminal, it will fail.
> 
> Example : flac ‐‐version
> will return an error : « can't open input file ‐‐version: No such file or
> directory », because of  « ‐‐version » with HYPHEN copied-pasted from the
> man pages.
> 
> The right string is « --version » with HYPHEN-MINUS (U+002D).
> 
> Example : flac --version
> will return : « flac 1.5.0 »
> 
> Please, feel free to read the issue in Github (
> https://github.com/xiph/flac/issues/861 ) for more details, as it's easier
> to read code and quotes with the markdown formatting.
> 
> This is a very pretty nasty kind of bug, because it's very difficult to
> distinguish HYPHEN-MINUS and HYPHEN in a terminal. It's also very difficult
> to figure out why the command has failed, as the « No such file or
> directory » is not the root cause of the problem.
> 
> I think a new build release to fix this, would be very welcome.
> 
> Thank you very much for your time and your great work. :)

Upstream sources seems to provide only .md man sources and no b-r package for 
conversion (pandoc unavailable from Cygwin) so man pages are generated for the 
upstream sources, and this conversion generates man page options with plain text 
hyphen-minus, which are treated by man as normal text *hyphen* `‐­­` not plain 
text *minus* `-`.
In man pages you use escaped hyphen-minus `\fB\-v\fR` to treat them as minus 
text `-` as used in options `-v`.
We see this use of unescaped hyphens in the upstream tar files, below, so please 
complain upstream about their man page generation, and reopen their issue:
```
$ wget https://mirror.../x86_64/release/flac/flac-1.5.0-1-src.tar.xz
$ tar -xvf flac-1.5.0-1-src.tar.xz
flac-1.5.0-1.src/
flac-1.5.0-1.src/flac-1.5.0.tar.xz			# upstream sources
flac-1.5.0-1.src/FLAC.cygport
$ tar -xvf flac-1.5.0-1.src/flac-1.5.0.tar.xz flac-1.5.0/man/{,meta}flac.1
flac-1.5.0/man/flac.1
flac-1.5.0/man/metaflac.1
$ grep -m5 '\\f[[{]\?B[]}]\\\?-' flac-1.5.0/man/{,meta}flac.1
flac-1.5.0/man/flac.1:\f[B]-\f[R] \f[I]\&...\f[R] ]
flac-1.5.0/man/flac.1:\f[B]flac\f[R] [ \f[B]-d\f[R] | \f[B]--decode\f[R] | 
\f[B]-t\f[R] |
flac-1.5.0/man/flac.1:\f[B]--test\f[R] | \f[B]-a\f[R] | \f[B]--analyze\f[R] ] [
flac-1.5.0/man/flac.1:\f[I]infile.ogg\f[R] | \f[B]-\f[R] \f[I]\&...\f[R] ]
flac-1.5.0/man/flac.1:\f[B]-d\f[R], analysis with \f[B]-a\f[R] or testing with 
\f[B]-t\f[R].
flac-1.5.0/man/metaflac.1:\f[B]-o\f[R] \f[I]filename\f[R]\f[B], 
--output-name=\f[R]\f[I]filename\f[R]
flac-1.5.0/man/metaflac.1:\f[B]--preserve-modtime\f[R]
flac-1.5.0/man/metaflac.1:\f[B]--with-filename\f[R]
flac-1.5.0/man/metaflac.1:\f[B]--no-filename\f[R]
flac-1.5.0/man/metaflac.1:\f[B]--no-utf8-convert\f[R]
```

[pasted upstream also but can not reopen issue!]

-- 
Take care. Thanks, Brian Inglis              Calgary, Alberta, Canada

La perfection est atteinte                   Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter  not when there is no more to add
mais lorsqu'il n'y a plus rien à retrancher  but when there is no more to cut
                                 -- Antoine de Saint-Exupéry