rewriteutil: adapt "cannot %s while merging" to work with "change branch of"
`rewriteutil.precheck()` creates error messages by inserting a given
verb into a sentence. The `hg branch -r` command passes in "change
branch of" as the verb. That doesn't work well with "cannot %s while
merging" (making it "cannot change branch of while merging"). Let's
insert a "changeset" there to make it work better.
Building sentences like this seems obviously bad for i18n, but fixing
that is out of scope for this series, IMO.
Differential Revision: https://phab.mercurial-scm.org/D10530
{
// Enforcing
"eqeqeq" : true, // true: Require triple equals (===) for comparison
"forin" : true, // true: Require filtering for..in loops with obj.hasOwnProperty()
"freeze" : true, // true: prohibits overwriting prototypes of native objects such as Array, Date etc.
"nonbsp" : true, // true: Prohibit "non-breaking whitespace" characters.
"undef" : true, // true: Require all non-global variables to be declared (prevents global leaks)
// Environments
"browser" : true // Web Browser (window, document, etc)
}