[luatex] Segfault with null argument to -output-comment

[Hans Hagen]

On 5/22/2015 9:46 PM, Reinhard Kotucha wrote:
> On 2015-05-22 at 12:21:59 +0200, luigi scarso wrote:
>
>   > A patch in trunk,
>   > revision 5253.
>
> Hi Luigi,
> there is another issue regarding command line arguments.  It's a minor
> issue but sometimes annoying.  AFAIK Knuth's TeX had no optional
> arguments but some implementations added some.  These implementations
> also issued a warning message
>
>    [*]tex: unrecognized option '-foo'
>
> if they encounter an argument beginning with a minus sign which they
> are not aware of.
>
> This was acceptable in the past, at least for all the other engines
> though I must admit that it was sometimes annoying that I had to tell
> TeX that *my* options begin with '+' and had to invoke TeX by a
> wrapper script which replaces all '-' signs with '+' in advance.
> Well, I think that this behavior is acceptable because reading command
> line arguments from a TeX file is an ugly hack anyway and I'm probably
> the only one doing such nasty things.
>
> However, in LuaTeX it's desirable to suppress the warning message
> because the command line (arg) is accessible by Lua code inside the
> TeX file.  Thus it should be possible to make use of it without beeing
> bothered or even confused by this message.

indeed

> I suppose that the warning message is not intended in LuaTeX because
> it had been removed already from former releases but came back in
> TL-2014, if I remember correctly.  Maybe it comes from one of the
> Web2C/Kpathsea .ch files or so and just had been overlooked in recent
> releases.
>
> Luigi, could you look into it, please?  Or discuss it with Taco, Hans,
> and Hartmut if you are unsure?  IMO the message is confusing if
> additional arguments are processed with Lua code later.

indeed there should be no warning, i made a tracker

Hans

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