D2678: help: supporting both help and doc for aliases

[rdamazio (Rodrigo Damazio Bovendorp)]

rdamazio added a comment.


  The flakiness was just due to Python map order randomization in tests (a fixed PYTHONHASHSEED=3170796678 or similar reproduces it consistently by getting dln before lognull).
  The real issue was the added "ignoresub=True" argument which broke strict ordering guarantees in the return value, combined with the fact that each lazy alias entry makes a copy of the cmdtable *at the state when it's created*.
  
  I've fixed this in ui.configitems so it preserves ordering - PTAL. Should also be a tiny bit faster now.
  I've also added tests for the recursive alias case.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D2678

To: rdamazio, #hg-reviewers, durin42, pulkit
Cc: mharbison72, spectral, pulkit, mercurial-devel