When building multi-step custom command forms, some prompts are only
relevant depending on earlier answers. Without conditional logic,
users must dismiss irrelevant prompts manually.
Prompts now accept a `condition` field with a template expression
evaluated against prior form values. Skipped prompts default to
an empty string.
The template expression is a string pre- and suffixed with double curly
braces - {{}}.
Form keys can be reused, a guard ensures that skipped prompts do not
reset already set form keys with an empty string. This allows the
conditional flow to remind a user to set a key that was left empty
because additional conditions want that key to be set. This removes the
need to have additional if checks in the command that uses the form
keys.
Introduce the 'SelectedSubmodule' struct and allow using it as a
placeholder value.
Add a corresponding test.
Update the documentation to include it among the listed placeholder
values.
The plan is to keep the original docs and schema folders unchanged for the
duration of a release; we'll only continuously update the -master copies. Right
before a new release we will copy them over.
Martin T.
Karl Wikström
rlkandela
Stefan Haller