What's Pattern Matching ?
With Pattern Matching, you specify a pattern which tells Tasker what text you wish
to match. For instance, if you want to match any telephone number starting with 0135, you
can specify the simple match 0135*. * is a special character which matches
any number of any character.
Tasker has two type of matching, Simple Matching and more advanced Regex Matching.
Simple matching is designed to be easy for non-technical people to use.
Where's It Used ?
Simple Matching is used in the following places:
- in the If condition of an action, when the ~ (match) or !~ (not match) operators
- in text paremeters of State and Event contexts
- some other places :-)
- if a pattern is left blank, it will match against anything
- if it is not blank it must match the whole target text
- / means 'or', it divides up multiple possible matches
- a * will match any number of any character. It's not possible to specifically
match a * character.
- a + will match one or more of any character. It's not possible to specifically
match a + character.
Beware: the condition '%var matches +' will be true
if %var has not been assigned a value, because Tasker does not replace variables which
do not have a value.
- matching is case-insensitive (magic will match with MagiC)
unless the pattern contains an upper-case letter e.g. Magic* will
not match against magically, but it will match against Magic Roundabout
- a ! at the very start of a match means not e.g. !*Magic*/*Yellow* matches anything not
containing the words Magic or Yellow
- it is not possible to specifically match a ! character at the start of a target (but you could
- help matches help but not helper.
- help* matches helper
- *the* matches the (anywhere)
- 123+ matches 123 and minimally one more character
- + matches anything with at least one character (non-empty)
- the*way matches the other way and the first way, amongst others
- Help/*shell matchs Help or anything ending with shell, case-sensitively
Caller matching (some events and states e.g. Call) is handled slightly differently.
- C:ANY matches the telephone number of any contact
- C:FAV matches the telephone number of any favourite (starred) contact
groupmatch matches the telephone number of a contact in a group which matches
- Otherwise: otherwise a match is attempted using the general matching rules
against both the caller phone number and the associated contact's name (if there
- !C:ANY matches a number not belonging to a contact
- 077*/Geoff* matches a number starting with 077 or belonging to a contact
whose names starts with Geoff
- C:FAV/0123456789 matches any favourite contact or the telephone number 0123456789
- CG:*Family*/CG:Business matches any contact in the contact groups Family Members, My Family or Business
Regular Expression Matching
Regular expressions are similar to simple matching patterns but have many more features
and are much harder for non-technical people.
Where's It Used ?
Regex Matching is available:
- in the If condition of an action, when the ~R or !~R operators
- in the Variable Search Replace action
- in the condition of a Variable Value state
- wherever a Simple Match is possible, by preceding the regex with ~R or !~R
Standard Java regular expression matching is applied. The Android Developer site has a