revsetlang: add utility function to return hash like symbols from the tree...
revsetlang: add utility function to return hash like symbols from the tree
Functionalities like unhiding changesets whose rev/hash is passed by the user
required the knowledge of rev/hashes in the user provided specs. This patch adds
functions which can parse tree object and return a list of such values.
Differential Revision:
https://phab.mercurial-scm.org/D1732