Comment #23 on issue 1455 by pekka.klarck: Process.Start Process unable to
execute command which change folder
http://code.google.com/p/robotframework/issues/detail?id=1455
Based on the example you sent (which I've so far only seen briefly on
colleagues machine) the problem is that you are passing configuration
arguments to the keyword via a list variable. That does not work because
Robot, by design, only evaluates named argument syntax when a keyword is
explicitly called like `name=value`.
If I understood it correctly, you had a user keyword that looked something
like this:
My Keyword
[Arguments] @{args}
Start Process command @{args}
and you used it like:
My Keyword argument
My Keyword argument shell=True
The latter one of these doesn't work as you expected. The end result is
that Start Process is called like this:
Start Process command argument shell\=True
To make the keyword work correctly, you can to change it to this:
My Keyword
[Arguments] ${shell}=True @{args}
Start Process command @{args} shell=${shell}
Unfortunately that also means you need to always give ${shell} if you want
to give @{args}:
My Keyword True argument
My Keyword ${EMPTY} argument
If you always want to use shell, or some other configuration parameter,
it's obviously easier to change your keyword to this:
My Keyword
[Arguments] @{args}
Start Process command @{args} shell=True
I hope that either one of the above solutions work for you.
Post scriptum:
The main reason for these problems is that Start Process uses Python's
**kwargs syntax and there is no equivalent syntax with user keywords.
Implementing something like that is far from trivial, because it would
require as to add new variable type to represent dictionaries.
An easier solution that ought to work too is implementing Python 3 style
keyword only arguments <http://www.python.org/dev/peps/pep-3102/>:
My Keyword
[Arguments] @{args} ${shell}=True
Start Process command @{args} shell=${shell}
This feature definitely won't make it to 2.8, though, as it is to be
released tomorrow.
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