31
Filtering is case insensitive. For complex filter expressions so called "regular
expressions" are supported. Here's a quick syntax overview:
+-?.*^$()[]{}|\
Characters with a special meaning. To match one of these characters, precede it
with a backslash. So e.g. "\." will match a dot.
- (dash) at the beginning of the expression
Inverts the meaning of the expression. Search for lines NOT matching the
following expression.
. (dot)
An arbitrary character.
[...]
One character from the given set. For example "[0-9a-f:] will match either a digit,
one of the letters a through f or a colon.
(...)
Grouping of elements. See "|" for an example.
? (question mark), * (asterisk), + (plus sign)
This are all multipliers refering to the directly preceding character, set or group.
The question mark makes it optional (zero or once), with an asterisk it may occur
zero or more times, with the plus sign at least once (one or more times).
| (pipe symbol)
Means "or". The expression " (19|20):" would be suitable to filter the time to 7pm
or 8pm.
^ (circumflex), $ (dollar)
These characters represent the start and the end of a text respectively. For
instance "^error" would match lines with the word "error" at the beginning of a
column text.
Each expression may either apply to all columns or just to a single column. Click the
plus symbol to get additional lines if you need to combine expressions. The expressions
can be combined with either "AND" or "OR".
Click the symbol on the right end of the row with the column titles to toggle the display
of individual columns.
