revset: rename findaliases() to expandaliases()

This function returns a full tree of alias expansion applied, which sounds
different from what "findaliases" would do.

mercurial/commands.py

@@ -3508,7 +3508,7 b' def debugrevspec(ui, repo, expr, **opts)'
     if ui.verbose:
         tree = revset.parse(expr, lookup=repo.__contains__)
         ui.note(revset.prettyformat(tree), "\n")
-        newtree = revset.findaliases(ui, tree)
+        newtree = revset.expandaliases(ui, tree)
         if newtree != tree:
             ui.note("* expanded:\n", revset.prettyformat(newtree), "\n")
         tree = newtree

mercurial/parser.py

@@ -239,7 +239,8 b' class alias(object):'
         self.error = err
         self.replacement = replacement
         # whether own `error` information is already shown or not.
-        # this avoids showing same warning multiple times at each `findaliases`.
+        # this avoids showing same warning multiple times at each
+        # `expandaliases`.
         self.warned = False
 
 class basealiasrules(object):

mercurial/revset.py

@@ -2256,7 +2256,7 b' class _aliasrules(parser.basealiasrules)'
     _parse = staticmethod(_parsealias)
     _getlist = staticmethod(getlist)
 
-def findaliases(ui, tree, showwarning=None):
+def expandaliases(ui, tree, showwarning=None):
     aliases = _aliasrules.buildmap(ui.configitems('revsetalias'))
     tree = _aliasrules.expand(aliases, tree)
     if showwarning:
@@ -2328,7 +2328,7 b' def matchany(ui, specs, repo=None):'
 
 def _makematcher(ui, tree, repo):
     if ui:
-        tree = findaliases(ui, tree, showwarning=ui.warn)
+        tree = expandaliases(ui, tree, showwarning=ui.warn)
     tree = foldconcat(tree)
     weight, tree = optimize(tree, True)
     posttreebuilthook(tree, repo)