Empty string check broken for some variables

[tiymat]

Describe the bug:
When you set a variable to the output of a command that outputs the empty string, later checks of the variable's value won't report it as being equal to the empty string.

Expected behaviour:
When the output of a command that emits the empty string is saved to some variable var, $var == "" should be true.

Screenshots:

Platform (please complete the following information):

• OS, output from uname -a if supported: 6.9.10-arch1-1
• Terminal Emulator: kitty 0.35.2
• Murex version, output from version --no-app-name: 6.2.3000

Additional context
Ran into this because it breaks the direnv hook.

I believe the change that causes this was introduced in the most recent release.

Seems to be related to the fact that the data type of the variable is set to *. If I change the command in the screenshot from printf "" to out "", it will behave as expected, presumably because out passes along the fact that the variable is a str through the pipe to set.

[lmorg]

Thanks for reporting this. Added a few more tests to catch comparisons with generics and other data types so we don't see this regression again.

Pushed a fix to master. New binaries are being built....

[tiymat]

Many thanks!