view tests/test-diff-subdir.t @ 16186:af3e67354beb

graphlog: apply file filters --patch/--stat output

When passing --patch/--stat, file filters have to be applied to generate the
correct diff or stat output:
- Without --follow, the static match object can be reused
- With --follow, the files displayed at revision X are the ancestors of
  selected files at parent revision. To do this, we reproduce the ancestry
  calculations done by --follow, lazily.

test-glog.t changes show that --patch output is not satisfying because renames
are reported as copies. This can probably be fixed by:

- Without --follow: compute files to display, look for renames sources and
  extend the matcher to include them.
- With --follow: detect .path() transitions between parent/child filectx,
  filter them using the linked changectx .removed() field and extend fcache
  with them.

  $ hg init

  $ mkdir alpha
  $ touch alpha/one
  $ mkdir beta
  $ touch beta/two

  $ hg add alpha/one beta/two
  $ hg ci -m "start"

  $ echo 1 > alpha/one
  $ echo 2 > beta/two

everything

  $ hg diff --nodates
  diff -r 7d5ef1aea329 alpha/one
  --- a/alpha/one
  +++ b/alpha/one
  @@ -0,0 +1,1 @@
  +1
  diff -r 7d5ef1aea329 beta/two
  --- a/beta/two
  +++ b/beta/two
  @@ -0,0 +1,1 @@
  +2

beta only

  $ hg diff --nodates beta
  diff -r 7d5ef1aea329 beta/two
  --- a/beta/two
  +++ b/beta/two
  @@ -0,0 +1,1 @@
  +2

inside beta

  $ cd beta
  $ hg diff --nodates .
  diff -r 7d5ef1aea329 beta/two
  --- a/beta/two
  +++ b/beta/two
  @@ -0,0 +1,1 @@
  +2