parser: factor out _trygetfunc() that extracts function name and arguments This provides a customization point for templater. In templater, there are two ways to call a unary function: func(x) and x|func. They are processed differently in templater due to historical reasons, but they should be handled in the same way while expanding aliases. In short, x|func should be processed as syntactic sugar for func(x). _funcnode and _getlist() are replaced by _trygetfunc().

parser: make _getalias() return (alias, pattern-args) pair This allows us to factor out a function that extracts a function (name, args) pair. See the next patch for why.

parser: drop redundant comparison between alias declaration tree and pattern Since _getalias() explicitly tests the type and name of the pattern tree, we don't need to compare "a.tree == tree" for 'symbol', and "a.tree == tree[:2]" for 'func', where tree is either ('symbol', name) or ('func', ('symbol', name)). This change helps implementing better handling of template aliases. See the subsequent patches for details. The alias.tree field is removed as it is no longer used.

patchbomb: fix public-is-missing hint Without this, there is no space between a hash and the -r preceding the next line in the use hg push hint

tests: clarify patchbomb repo is public not remote

run-tests: set HGMODULEPOLICY for --pure Without this, my python 2.6 virtualenv test run with --pure and --local fails with: + ImportError: Python minor version mismatch: The Mercurial extension modules were compiled with Python 2.7.8, but Mercurial is currently using Python with sys.hexversion=33950192: Python 2.6.9 (unknown, Apr 13 2016, 12:40:12) + [GCC 4.9.2 20141101 (Red Hat 4.9.2-1)] + at: ~/hg/py26/bin/python