view mercurial/help/multirevs.txt @ 22304:5678b0e3608f

templater: enable alias predicates to be used in "revset()" function

Before this patch, predicates defined in "[revsetalias]" can't be used
in the query specified to template function "revset()", because:

  - "revset()" uses "localrepository.revs()" to get query result, but
  - "localrepository.revs()" passes "None" as "ui" to "revset.match()", then
  - "revset.match()" can't recognize any alias predicates

To enable alias predicates to be used in "revset()" function, this
patch invokes "revset.match()" directly with "repo.ui".

This patch doesn't make "localrepository.revs()" pass "self.ui" to
"revset.match()", because this may be intentional implementation to
prevent alias predicates from shadowing built-in ones and breaking
functions internally using "localrepository.revs()".

Even if it isn't intentional one, the check for shadowing should be
implemented (maybe on default branch) before fixing it for safety.

When Mercurial accepts more than one revision, they may be specified
individually, or provided as a topologically continuous range,
separated by the ":" character.

The syntax of range notation is [BEGIN]:[END], where BEGIN and END are
revision identifiers. Both BEGIN and END are optional. If BEGIN is not
specified, it defaults to revision number 0. If END is not specified,
it defaults to the tip. The range ":" thus means "all revisions".

If BEGIN is greater than END, revisions are treated in reverse order.

A range acts as a closed interval. This means that a range of 3:5
gives 3, 4 and 5. Similarly, a range of 9:6 gives 9, 8, 7, and 6.