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Re: All caps .TH page title

From: Alejandro Colomar
Subject: Re: All caps .TH page title
Date: Tue, 2 Aug 2022 18:19:39 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.1.0

Hi DJ Chase,

On 8/2/22 17:51, DJ Chase wrote:
On Tue Aug 2, 2022 at 5:55 AM EDT, Alejandro Colomar wrote:
The thing is that I'm running mandoc(1) from a Makefile, which means
that not only stdout/stderr is important, but also the exit status.
There's no trivial way to ignore mandoc(1)'s error code for certain
warnings.  Also, I run it for a few thousands of manual pages, so I
don't want make(1) to stop at every page that triggers an unwanted
warning.  But I do want make(1) to stop at errors/warnings in general.

You could swap mandoc’s stderr and stdout, then filter it with sed and
redirect sed to stderr:

        mandoc -W <level> 3>&2 2>&1 1>&3 | sed '/reg/ex/d' >&2

Of course if mandoc also normally writes to stdout this would create new
stuff on stderr, so you could run it in two-passes:

        # pass where we care about mandoc’s regular output
        mandoc 2>/dev/null
        # pass where we care about mandoc’s errors
        mandoc -W <level> 2>&1 >/dev/null | sed '/reg/ex/d' >&2


mandoc(1) seems to always write to stdout in -Tlint mode, so this wouldn't be an issue.

The issue is the EXIT STATUS. Anything non-zero makes make(1) stop running and error with 2. That's the hardest thing to workaround.




Alejandro Colomar

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