Question:

Is it possible to have a GO script with a conditional based on the value of an argument?

Explanation:

The main relevant documentation is in the Ferret Users Guide, see "GO, arguments" in the index.

Also relevant is thedocumentation on the IF-THEN-ELSE structure

The same approach that works on arguments also applies to symbol substitution.

Solution:

Here's an example jnl file -- test.jnl:

if $1"false|yes>true|*>false" then
say "The user told me to do it"
else
say "The user told me not to do it"
endif

The first "false" is the default value if no argument is supplied. "yes" translates to "true", all else ("*") translates to "false".

Used as follows:

yes? cancel mode verify
 
yes? go test yes
The user told me to do it
 
yes? go test no
The user told me not to do it
 
yes? go test
The user told me not to do it

Last modified: Apr 22, 2004