Racket checker runs GUI program

[kasbah]

With vim-racket installed, working on a GUI program, the racket checker runs the GUI program, :make does not.

vim-racket sets:

setl makeprg=raco\ make\ --\ %

which might be a better option for the checker. I couldn't find where to define the actual checker as this line seems sort of magical.

[lcd047]

Syntastic doesn't use, nor cares about, Vim's option makeprg, Vim's command :make, and their friends. It used to do that, but it stopped doing it a few years ago. The name of the internal variable makeprg is a legacy from those days. The variable still holds a command line that eventually gets passed to a shell, but other than that it could have had any other name, it has no relation to Vim's option makeprg.

Back to your problem: you can see the command lines constructed by syntastic in the debug logs (see :h syntastic-config-debug). By default, the racket checker simply runs racket file.rkt, and parses the output into a loclist with lgetexpr. Unsurprisingly, this just runs the program.

You can change the command line constructed by syntastic by setting the various options (see :h syntastic-config-makeprg). Changing the command line to raco make -- file.rkt is unlikely to work though, since lgetexpr expects the output of racket, not that of make. It's up to you to make sure syntastic runs something that makes sense.

[kasbah]

Thank you very much for the explanation. Do you not think the checker should be changed if it actually executes the program under test? Would you be so kind as to point me to where the executed command is defined in the syntastic source code?

[lcd047]

Do you not think the checker should be changed if it actually executes the program under test?

Can racket check the syntax of a (single) file without running it? If it can, I can try to fix the problem. If it can't, I can wash my hands of it. If the answer involves raco make then the fix might be more involved, and you'll have to explain me in some detail what is supposed to be going on (keeping into account that I barely know what Racket is, let alone how it works).

@2sb18 Any comments on this?

Would you be so kind as to point me to where the executed command is defined in the syntastic source code?

It's here. See the guide and the manual for an explanation.

[lcd047]

Ok, assuming the worst. Commit 95879f1.

[kasbah]

Probably for the best. I will try out the alternative racket checker and try and define one based on raco make if I am not happy with that one.