use different command for different racket dialect

[glyh]

For example, if we have lang tag #lang r5rs, the command for calling racket REPL should include be racket -I r5rs

[russtoku]

I'm wondering if @glyh is requesting that the racket client honor the lang tag by automatically changing the command to racket -I <lang> from the default of racket. This would be based on the #lang <lang> line in the file to be edited.

My observation is that the default command set in the global variable, g:conjure#client#racket#stdio#command, works with a file that has a lang tag like #lang sicp. But only the first time that the file is loaded. The same racket REPL is used for other files after that which might not apply.

So, it would also be helpful if multiple REPLs could be enabled for each of the lang tags found in files being edited. I'm assuming only one lang tag would appear in a file. I think that the general guidance is to always have a lang tag line at the top of the file.

[russtoku]

See also Issue #643. This is due to the how the Racket works.