nushell

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Allow open to work with 'from ...' block commands (#5049) * Remove panic from BlockCommands run function Instead of panicing, the run method now returns an error to prevent nushell from unexpected termination. * Add ability to open command to run with blocks The open command tries to parse the content of the file if there is a command called 'from (file ending)'. This works fine if the command was 'built in' because the run method doesn't fail in this case. It did fail on a BlockCommand, though. This change will first probe if the command contains a block and evaluate it, if this is the case. If there is no block, it will run the command the same way as before. * Add test open files with BlockCommands * Update open.rs * Adjust file type on open with BlockCommand parser Co-authored-by: JT <547158+jntrnr@users.noreply.github.com> 2022-04-01 18:52:32 +00:00			`a,\|,b`
			`c,\|,d`