- |__expanding: ${perl{foo}{arg1}}
- \_____result: Subroutine foo called with args: arg1
- /considering: ${perl{foo_undef}}
- /considering: foo_undef}}
- |__expanding: foo_undef
- \_____result: foo_undef
- |failed to expand: ${perl{foo_undef}}
- |___error message: Perl subroutine "foo_undef" returned undef to force failure
- \failure was forced
- /considering: ${perl{debug_write}{debug from Perl\n}}
- /considering: debug_write}{debug from Perl\n}}
- |__expanding: debug_write
- \_____result: debug_write
- /considering: debug from Perl\n}}
- |__expanding: debug from Perl\n
- \_____result: debug from Perl
-
+ ├──expanding: ${perl{foo}{arg1}}
+ └─────result: Subroutine foo called with args: arg1
+ ┌considering: ${perl{foo_undef}}
+ ┌considering: foo_undef}}
+ ├──expanding: foo_undef
+ └─────result: foo_undef
+ ├failed to expand: ${perl{foo_undef}}
+ ├───error message: Perl subroutine "foo_undef" returned undef to force failure
+ └failure was forced
+ ┌considering: ${perl{debug_write}{debug from Perl\n}}
+ ┌considering: debug_write}{debug from Perl\n}}
+ ├──expanding: debug_write
+ └─────result: debug_write
+ ┌considering: debug from Perl\n}}
+ ├──expanding: debug from Perl\n
+ └─────result: debug from Perl
+