Subject: Re: bug#10249: 24.0.92; align-regexp fails with 'not a markerp: 0' error

From: Stefan Monnier <[email-masked]>
Date: Wed, 07 Dec 2011 16:17:37 -0500

> 1) enter the text:
> foo = 1
> bar     =     2
> baz  =    'a string'

> 2) set the region around those three lines
> 3) type M-X align-regexp and specify '=' as the regexp
> 4) align-regexp will fail with the error 'wrong type argument: markerp, 0'

Could you check again with the very latest code from Emacs's trunk?
A fix was recently installed which fixes a bug which should exhibit
exactly the symptoms you describe.

        Stefan