Inconsistent behavior of task and subtask

[cvoelcker]

\begin{task}[credit=5 + 6 + 3 + 6]{Linear Algebra Refresher}
\begin{subtask}[credit=5,title=Matrix Properties]

The code above is derived from the current documentation and works. This is slightly difficult to work with, since you have to remember two formats for specifying titles and exercises. Is it possible to have:

\begin{task}[credit=5 + 6 + 3 + 6]{Linear Algebra Refresher}
\begin{subtask}[credit=5]{Matrix Properties}

work in an identical fashion to keep the format consistent? Currently, the title of subtaks is not rendered when the environment is set up this way.

This is probably related to recent fixes due to #176 .

[TeXhackse]

This is not directly related to the other issue. It as been the case since the first Version.

If you don't use an the Syntax of = inside the optional argument for the subtask it was always be different.

An option would be to add a second optional argument, like

\begin{subtask}[credit=x][title]

but this would lead to an issue if there is only one argument.
That's why I chose to create it that way.
To have the complete identical Syntax for both, would also be annoying for some, because in most cases (as far as I saw it) subtasks won't get a title.

What I can offer, is the possibility of making the task to use both variants

\begin{task}[credit=5 + 6 + 3 + 6,title={Linear Algebra Refresher}]{}

would be identical to

\begin{task}[credit=5 + 6 + 3 + 6]{Linear Algebra Refresher}

With a bit more effort, even with the removal of the empty group. But this might also confuse users.

The only possibility to get everything working would be to require the title but make a variant without a title as well. I will think about this, though I would not really like to change the default, but add a
subtask* which required the title...

[TeXhackse]

I thought about this, and I still think in general it is not a good idea to enforce titles for subtasks. But you can workaround this for personal use:

\ExplSyntaxOn
\makeatletter
\NewDocumentEnvironment{mysubtask}{om}{
	\IfNoValueF{#1}{
		\keys_set:nn {TUDa/subtask} {#1}
	}
	\@subtask{#2}
}{}
\makeatother
\ExplSyntaxOff

This would define an extra environmet. Alternatively you could redefine subtask, replacing the first line of the Definition by \RenewDocumentEnvironment{subtask}{om}{.