Am 06.02.19 um 19:31 schrieb Pablo Rodriguez:
> On 2/5/19 8:07 AM, Jan U. Hasecke wrote:
>> Hola Pablo,
> 
> Hallo Jan-Ulrich,
> 
>> I inserted this in the setupbackend command so that ConTeXt stops with
>> the unknown command \colorprofilenotfound I inserted in the else clause.
>>
>> But more and more I think that ConTeXt should fail if it does not find
>> the color profile, because if you forget to study the log file before
>> sending the pdf to the print shop you can loose a lot of money.
> 
> But the scenarios in which you could loose a lot of money are many more
> than you might think.
> 
> Imagine the following:
> 
>     \startbuffer
>         A Greek sentence:
>             χαλεπὰ τὰ καλά
>     \stopbuffer
>     \definefallbackfamily[mainface][rm][GFS Didoto]
>         [preset=range:greek]
>     \definefontfamily[mainface][rm][Latin Modern Roman]
>     \definefallbackfamily[amainface][rm][GFS Didot]
>         [preset=range:greek]
>     \definefontfamily[amainface][rm][TeX Gyre Pagella]
>     \definefallbackfamily[smainface][rm][GFS Didot]
>         [preset=range:greek, force=yes]
>     \definefontfamily[smainface][rm][TeX Gyre Pagella]
>     \setupbodyfont[mainface]
>     \starttext
>     \startTEXpage[offset=2em]
>         \getbuffer\\
>         \amainface\getbuffer\\
>         \smainface\getbuffer
>     \stopTEXpage
>     \stoptext
> 
> Not embedding all glyphs for the fallback font (failing to type
> "force=yes") could lead to weird results. Not to mention when a font
> isn’t embedded at all.
> 
>> And as we use ConTeXt in a group where people have different ConTeXt
>> knowledge the generation should be bullet proofed.
> 
> I totally agree with that. But it mainly relies on how source documents
> are written. ConTeXt cannot type the source for us.
> 
>> The behaviour of ConTeXt is AFAICS the following.
>> If you install icc-profiles in texmf-context they get lost during the
>> next update of ConTeXt. But ConTeXt will not stop the complilation only
>> warning that there is no profile file.
>>
>> ConTeXt only stops to compile if you delete a profile which was present
>> during installation/update or which was present during a "mtxrun
>> --generate" (Thanks to Mojca for this hint). Then the file is registered
>> and ConTeXt wants to access it, failing if it is not there.
>>
>> If you install profiles in texmf-local and then do a "mtxrun --generate"
>> you are quite safe as long as you do not install ConTeXt from scratch.
> 
> No computer can read your mind. Or a brand-new installation cannot guess
> whether you are up to some auxiliary files (name them color profiles,
> fonts, or whatever you want).
> 
>> If you want to compile a ConTeXt project on an other computer you have
>> to study the log file to see that it does not find a color profile. And
>> this is dangerous, because none expects this to be a problem. I think
>> ConTeXt should fail and stop if the profile is not there.
> 
> But checking if the file exists is a safe way to know whehter it can be
> embedded in the output PDF document.
> 
> Another scenario would be attaching files to a PDF document using the
> \attachment command. I have done it myself.
> 
> With some of my documents, I had to attach a variable number of extra
> documents to the final PDF. The only way to secure the attachment was
> \doiffileelse{file.pdf}{\attach[file.pdf]}{\ssbf\color[red]{missing
> attachment}}.
> 
> Just in case it helps,

Yes, your solution helps and I use it for now.

But I am still looking for a switch to have a nitpickier runlevel of
ConTeXt. From the documentation suite Sphinx I know such a switch which
turns warnings into errors (causing Sphinx to stop) and vice versa.

At least a missing file should make ConTeXt stop immediately.

juh
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