At the moment flx has a switch "--echo" which is used to try to make
it echo shell commands. However flx could be used in a shell script
or program, and there are other tools that do shell callouts.
So I am hijacking the system and popen_in functions and inserting
a test based on an environment variable, which is set, will cause
the shell commands to be echoed to stderr. This can be applied
outside a process script. i.e. non-invasively. Seems a better idea than
passing switches all over the place, even though the latter is
more selective. The variable is:
FLX_SHELL_ECHO
and if set to anything other than "" will cause all shell callouts
to be echoed to standard error.
I should document this and other such environment variables which
can be used for monitoring, eg you can monitor the garbage collector
already, service calls, etc.
--
john skaller
skal...@users.sourceforge.net
http://felix-lang.org
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