Hg select file based on status?

Question

Is there a way to select only those files that have the Modified status?
And is it possible to chain the selection to add more specific selectors?

I want to export the changes in those Modified files, revert to a changeset before I installed the plugin, and re-import changes.

hg diff -I with pattern matching could help, but in this case, and very often, I just want to select files based on their status.

Example of hg st (actual content varies with different folder and filenames/extension):

M /readme.txt
M /dir1/somefile1.txt
M /dir2/somefile2.txt
M /dir3/somefile3.txt
M /dir4/somefile4.txt
! /plugin/lotsoffileshere.txt
! /plugin/lotsoffileshere.txt
! /plugin/lotsoffileshere.txt

Answer 1

Read about filesets in mercurial: hg help filesets

If you want get diff for all modified files (hg diff FILE1 FILE2 ... FILE), build filest for "modified files in repo" in will be (only help was used)

hg diff "set:modified()"