#167 shell_command(): make input_string argument optional

[Bert Wesarg]

This simple patch makes the input_string of shell_command() optional and defaults it to "".

[Bert Wesarg]

[Bert Wesarg]

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fix brown-paper-bag-bug

File Added: shell_command-make-input-parameter-optional.patch

[Bert Wesarg]

[Thorsten Haude]

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Looks very useful. I think I used the input string once since I started writing macros.