External Diff Support in IDE outwith Source Control

[shdwcat]

Is your feature request related to a problem?

If I want to diff two files, I have to navigate to the location of those files on disk (which is easiest via the IDE since the disk location doesn't match the folder structure) and then open my diffing program.

Describe the solution you'd like

Other tools often let you configure an external diffing tool and then provide a context menu option to invoke the diff. This works by providing control over command line parameters, with limited macro support. For example, here is the P4V (Perforce source control) section for setting up external diff: In this example, %1 and %2 are macros for the two selected files

Ideally the solution also supports a Diff option for single files, as that can be used to do a diff in git for the current file changes against the committed version.

Describe alternatives you've considered

No response

Additional context

No response

[stuckie]

We have this in Preferences -> Plugins -> Source Control (Git)

You can use it in the Source Control History window by double clicking the item you want to diff against the current version

Or by going into the commit window and double clicking the item you want to check changes you've made

And here is the manual page for setting it up: https://manual.gamemaker.io/monthly/en/#t=IDE_Tools%2FSource_Control%2FExternal_Merge_Diff_Tools.htm

Is there something else in particular that is missing?

[stuckie]

Closing as above. If there's something that we're missing, please describe what it is that you want.

[shdwcat]

That covers the second case (diffing against source control history), but not diffing two files against each other.

[stuckie]

Reopening as the original request is actually for Diff support outwith Source Control