diff tests/test-revset.t @ 16820:20f55613fb2a

revset: add pattern matching to 'tag' revset expression

If the string provided to the 'tag' predicate starts with 're:', the rest
of the string will be treated as a regular expression and matched against
all tags in the repository.

There is a slight backwards-compatibility problem for people who actually
have tags that start with 're:'. As a workaround, these tags can be matched
using a 'literal:' prefix.

If no tags match the pattern, an error is raised. This matches the behaviour
of the previous exact-match code.

--- a/tests/test-revset.t	Wed May 30 23:13:33 2012 +0100
+++ b/tests/test-revset.t	Wed May 30 23:13:33 2012 +0100
@@ -369,6 +369,22 @@
   6
   $ log 'tag(tip)'
   9
+
+we can use patterns when searching for tags
+
+  $ log 'tag("1..*")'
+  abort: tag '1..*' does not exist
+  [255]
+  $ log 'tag("re:1..*")'
+  6
+  $ log 'tag("re:[0-9].[0-9]")'
+  6
+  $ log 'tag("literal:1.0")'
+  6
+  $ log 'tag("re:0..*")'
+  abort: no tags exist that match '0..*'
+  [255]
+
   $ log 'tag(unknown)'
   abort: tag 'unknown' does not exist
   [255]