raw_exec driver doesn't allow space in command field, even inside a path.

[ninoles]

This is related to the change in #842, sorry to find it out so lately.

If you create a job with a space in the command path, this will failed since the check only check for any whitespace. A more thorough check should be done to allow quoting (or the check should be downgrade to a warning, preferably during the submission of the job, not that late!).

Thanks,
Fabien

[ninoles]

I'm trying to figure out what should be the right fix for that, but I feel that the best way is to simply accept commands with space inside the path. Given the fact that the error is reported so lately, the result is almost the same: the executor either report this error (which is misleading if the process actually doesn't have any argument) or fail because the file actually doesn't exist. May be the message in case of error could be modified in this regard, and the validation removed ?

[github-actions]

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