Re: [Modules] Variable interpolation within set-alias and set-function

[Xavier D. <xav...@gm...>]

Hello Nick,

You need to enclose the function definition with double quotes ("")
rather curly braces ({}) to get this variable interpolation mechanism
in Tcl. Then within you function body, you should escape all double
quotes character:

$ cat test
#%Module

set var "hello"

set-function greeting "
    echo \"$var\"
"
$ ml show ./test
-------------------------------------------------------------------
/path/to/modulefiles/test:

set-function    greeting {
    echo "hello"
}
-------------------------------------------------------------------
$ ml load ./test
$ greeting
hello

Regards,
Xavier

Le jeu. 19 août 2021 à 02:26, Dusek, Nick via Modules-interest
<mod...@li...> a écrit :
>
> Hello,
>
> I am using the set-function directive in Modules v4.5.3 and am trying to interpolate TCL variables within the command string before exporting the function to the environment. For example:
>
> #%Module
>
> set var "hello"
>
> set-function greeting {
>     echo "$var"
> }
>
> However, when I load the module and run 'type greeting' I get the following:
>
> greeting is a function
> greeting ()
> {
>     echo "$var"
> }
>
> Whereas, what I would really like to see is:
>
> greeting is a function
> greeting ()
> {
>     echo "hello"
> }
>
> How do I instruct Modules to interpolate "$var" to its value of "hello" before exporting the function, rather than exporting it with "$var" verbatim?
>
> Thanks,
> Nick
>
>
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