You can do this with AlignTab, no need for a different plugin. You just need to use the more advanced regex functionality as described on the GitHub page.
Bring up the Command Palette (Ctrl+Shift+P on Windows or cmd+shift+P on Mac), type in “AlignTab”, press enter, and type this in and hit enter:
:/r0clf1
Props to @Hank for including 0 spaces option, didn’t even realize he didn’t want the space.
Explanation:
- the
:finds the colon - the
/says okay now here come some arguments about what I want you to do with the colon - the
rmeans right-justify the first column - the
0means 0 spaces after the right column - the
cmeans center the middle column (which is just the colon, so it doesn’t do anything) - the
lmeans left-justify the right column - the
f1means only do this for the first match on the line