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Hidding subshells can lead to surprising behavior #43

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smondet opened this issue Feb 3, 2017 · 0 comments

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smondet commented Feb 3, 2017

We use subshells ($( ... ) and ( ... )) in a few places, and those behave like sub-processes wrt execution environment.

let cmd_wrapper c = (* wraps c with redirections *) in

....
cmd_wrapper "cd /tmp";
cmd_wrapper "pwd";  (* <- this is not in /tmp because the cmd_wrapper made a subshell that cancels the "cd" when finishing. *)
....

How do/we document/warn about that?

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EDSL.in_environment or seq_subshell or in_dir ... #45

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