Ignore labels when centering

[KillianB8]

Is there a way to ignore edge labels when aligning a diagram (ie. only take into account nodes)?

In the following example, I'd like the nodes of the first diagram to line up with the nodes of the second one:

#align(center)[#diagram(
  node((0, 0), $1$),
  node((0, 1), $2$),
  edge((0, 0),(0, 1),"->","this is a very long label"),
)]
#align(center)[#diagram(
  node((0, 0), $1$),
  node((0, 1), $2$),
  edge((0, 0),(0, 1),"->"),
)]

(sorry if this isn't the place to ask this btw!)

[Jollywatt]

I agree I think this would be a better default.

Fletcher actually does this by default — only nodes affect the diagram's grid layout (which you can see this with debug: 1). However, the cetz canvas that hosts the diagram sets the bounding box to the entire content. Once we find out how to either 1) manually set the cetz canvas' bounding box, or 2) make labels not affect the bounds, this can be done.

Edit: perhaps diagram() should expose both behaviours with a setting to be safe.

[Jollywatt]

Associated cetz issue: https://github.com/cetz-package/cetz/issues/619