Re: [docbook-apps] Break long programlisting lines without spaces?

[Peter Desjardins <peter.desjardins.us@gmail.com>]

It does not seem to work in FOP 1.0. Using hyphenate.verbatim results
in SEVERE: Exceptions. Strangely, it seems to insert several of the
hyphenation characters and then fail at some point before completing
the document. Based on David's research, I may not try to hunt down
that point.

Maybe I can add a preprocessing step find really long strings in
programlistings, break them at a certain length, and insert a
line-wrap character and a line break processing instruction.

Thanks for your help.

Peter

On Wed, Apr 13, 2011 at 9:41 PM, David Cramer <david@thingbag.net> wrote:
> On 04/13/2011 04:32 PM, Jirka Kosek wrote:
>> Peter Desjardins wrote:
>>
>>> Has anyone developed a customization that will do this?
>> There is parameter for this:
>>
>> http://docbook.sourceforge.net/release/xsl/current/doc/fo/hyphenate.verbatim.characters.html
>>
>> If you want to allow breaking after any character you can put complete
>> alphabet inside this parameter.
>>
>> However I'm not sure if this will work in FOP. This is known to work in
>> XEP, but AFAIK it was not working in FOP 0.20.x/0.9x. I have never
>> tested it with FOP 1.0.
>>
>>                       Jirka
>>
>
> I've done a little research on this and found on the fop list some
> discussion (pasted below). The fop developers feel that using the
> hyphenation character to achieve this is an abuse of the
> hypenation-character property. However, it is to my mind an obvious and
> important thing to want to do, so I would say that it's an omission from
> the FO-spec. I've meant to post on the fop list asking for an extension
> feature of some kind to allow for this situation without abusing any
> features, but haven't gotten around to it.
>
> David
>
> http://markmail.org/thread/g32fgn6pjxotudlu#query:+page:1+mid:s77ceg3jx2hxtzlc+state:results
>
>
> "...Like its name indicates, the hyphenation-character property
> specifies which character should be used when hyphenating a word. So it
> will be used only when a line break occurs within a word.
>
> The requirements of the present case are different. Stylesheets doing
> things like the above are just abusing the hyphenation-character property."
>
> http://permalink.gmane.org/gmane.text.xml.fop.user/30480
>
> "The hyphenation-character property (which FOP does support) is not meant
> to be used for adding continuation characters where long lines are being
> wrapped. It's only used when breaking /inside/ a word, which rarely is
> what you want when you typeset program listings."
>
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