DMARC-Filter: OpenDMARC Filter v1.4.2 delorie.com 4ACHLul7031491
DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org DF7D13858CDB
Message-ID: <e26ef790-4c8d-4cf7-b0ba-ef36320ae178@SystematicSW.ab.ca>
Date: Tue, 12 Nov 2024 10:21:28 -0700
MIME-Version: 1.0
User-Agent: Mozilla Thunderbird
Subject: Re: pdfroff generating blank output
Content-Language: en-CA
To: cygwin AT cygwin DOT com
References: <CAGXJAmyTuTizNVX-dJDOyjM-m5eC=4qz9xdk3yGFUr+RZ7MuFw AT mail DOT gmail DOT com>
Autocrypt: addr=Brian DOT Inglis AT Shaw DOT ca; keydata=
 xjMEXopx9BYJKwYBBAHaRw8BAQdAPq8FIaW+Bz7xnfyJ1gHQyf2EZo5sAwSPy/bRAcLeWl/N
 I0JyaWFuIEluZ2xpcyA8QnJpYW4uSW5nbGlzQFNoYXcuY2E+wpYEExYIAD4WIQTG63sbl+cr
 2nyOuZiKvQKcH1E27wUCXopx9AIbAwUJCWYBgAULCQgHAgYVCgkICwIEFgIDAQIeAQIXgAAK
 CRCKvQKcH1E276DmAP91Bt8kfJhKHYb9b2sao2fxwJFsl1GlRi516WKI0OkphQEA+ULITsPs
 blfzSq+GgI7q4LPfRfTLy4Oo3gorlnhnfgnOOAReinH0EgorBgEEAZdVAQUBAQdAepgIsLwm
 GQicfoIBaB9xHp63MQJqVCPbgPzESTg7EEwDAQgHwn0EGBYIACYWIQTG63sbl+cr2nyOuZiK
 vQKcH1E27wUCXopx9AIbDAUJCWYBgAAKCRCKvQKcH1E27+zoAP4u2ivMQBAqaMeLOilqRWgy
 nV2ATImz1p2v1H5P4kBiDwD3caPK1cxU5lijzuSDCjgtIpgF/avHbjA32fxJdIRwAA==
Organization: Systematic Software
In-Reply-To: <CAGXJAmyTuTizNVX-dJDOyjM-m5eC=4qz9xdk3yGFUr+RZ7MuFw@mail.gmail.com>
Precedence: list
From: Brian Inglis via Cygwin <cygwin AT cygwin DOT com>
Reply-To: cygwin AT cygwin DOT com
Cc: Brian Inglis <Brian DOT Inglis AT SystematicSW DOT ab DOT ca>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Errors-To: cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com
Sender: "Cygwin" <cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com>
Content-Transfer-Encoding: 8bit

On 2024-11-11 13:33, John Ousterhout via Cygwin wrote:
> As  of this morning the behavior of pdfroff under Cygwin seems to have
> changed for me: the PDF output that it produces is (often) blank:
> * It seems to have the right number of pages, but all of the pages are blank.
> * I tried several different viewers including Adobe Acrobat, the PDF
> displayer in Firefox, and the PDF displayer in VSCode; all show the
> same blank output.
> * Historically pdfroff has worked consistently for me with no
> problems. Files that produce blank output today worked fine in the
> past (perhaps a few months ago?).
> * The behavior is not totally consistent: some files still work while
> others don't. After poking around a bit, I was able to find a
> single-line change that flips the behavior between working and not
> working. I have attached the file (homa.7), which can be compiled with
> "pdfroff -man homa.7 > homa.pdf". In its current form, this file
> generates blank output for me. But, if I delete line 561 (".IR
> max_incoming /(N+1).") then the file generates viewable output.
> * In cases where the output is blank, I tried using "groff -T ascii"
> instead, and this produces fine output.
> 
> I am also attaching output from "cygcheck -s -v -r > cygcheck.out", in
> case that sheds some light.
> 
> Any help would be much appreciated; is it possible that I am doing
> something wrong?

As pdfroff is a shell script, you can run it with `sh -vx /bin/pdfroff ...` to 
see what it is doing;
append ` |& tee pdfroff-blank.log` to capture the output, to get help here about 
what it is doing;
ask on the groff list groff AT gnu DOT org, report a bug to groff AT gnu DOT org based on:

	https://git.savannah.gnu.org/cgit/groff.git/tree/PROBLEMS
and
	https://git.savannah.gnu.org/cgit/groff.git/tree/BUG-REPORT

or on the bug tracker:

	https://savannah.gnu.org/bugs/?group=groff

As this is Windows, sometimes weird stuff happens, so updating Cygwin packages, 
and/or reboot, sometimes fix unexpected weirdness.

-- 
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 retirer     but when there is no more to cut
                                 -- Antoine de Saint-Exupéry

-- 
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple