Re: groff-1.23.0.5077-7dcc8 tmac/tests/an_UR-works.sh failure on CentOS 7.9, Ubuntu 20.04

"G. Branden Robinson" <[email protected]> Mon, 19 Jan 2026 17:57:31 -0600

Newsgroups	gmane.comp.printing.groff.general
Message-ID	<20260119235731.crgo3xyl2hkpje55@illithid>

[CCing groff@gnu to keep developers informed]
[CCing Colin Watson as erstwhile groff package maintainer for Ubuntu]

See below.

At 2026-01-19T16:40:05-0700, Nelson H. F. Beebe wrote:
> For groff-1.23.0.5077-7dcc8 on CentOS 7.9 and Ubuntu 20.04, I got
> this failure:
> 
> FAIL: tmac/tests/an_UR-works.sh
> 
> Here is the log file:
> checking HTML output of web URI
> I/O Error: Couldn't open file '-'
> 
> checking formatting of web URI with link text (pdf device; hyperlinks disabled)
> ...FAILED
> checking formatting of web URI with no link text (pdf device; hyperlinks disabled)
> ...FAILED
> I/O Error: Couldn't open file '-'
> 
> checking formatting of web URI with link text (pdf device; hyperlinks enabled)
> ...FAILED
> checking formatting of web URI with no link text (pdf device; hyperlinks enabled)
> ...FAILED
> FAIL tmac/tests/an_UR-works.sh (exit status: 1)

I've never seen this failure mode before.

Could some kind of security machinery be interfering with grohtml(1)'s
substantially complex means of getting things done?

Here's the test script:
https://cgit.git.savannah.gnu.org/cgit/groff.git/tree/tmac/tests/an_UR-works.sh?h=1.24.0.rc1#n100

Regards,
Branden

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