8.14. Searching the Contents of a Text Widget
You can use the
search method to search the Text widget for a
pattern or regular expression. The search method takes some optional
switches, the pattern to search for, and an index at which to start
searching:
$index = $text->search([switches], pattern, index, [ stopindex ])
If a match is made, the index returned points to the first character
in the match. If no match is made, an empty string is returned.
Here is a simple example of using search:
$result = $text->search(-backwards => "find me", 'end');
$location = $text->search(-nocase => "SWITCHES", "1.0");
See the sidebar "Search Options" for more
information.
Search Options
- -forwards
-
Tells search to search
forward through the Text widget starting at
index. This is the default.
- -backwards
-
Tells search to search
backward through the Text widget starting at the character before
index.
- -exact
-
The pattern must match the text exactly.
This is the default.
- -regexp
-
The pattern will be
considered as a regular expression.
- -nocase
-
Ignores case between pattern and the text
within the Text widget.
- -hidden
-
Searches text even if it has a tag with -state =>
hidden.
- -count => varname
-
varname is a pointer to a variable (i.e.,
\$variable). The number of characters matched will
be stored within that variable.
- --
-
This option does nothing except force the next argument to be taken
as the pattern even if the next string
starts with a "-".
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