table of contents
| FUNCTION::MATCHED(3stap) | A collection of standard strin | FUNCTION::MATCHED(3stap) |
NAME¶
function::matched - Return a given matched subexpression.
SYNOPSIS¶
matched:string(n:long)
ARGUMENTS¶
n
index to the subexpression to return. 0 corresponds to
the entire regular expression.
DESCRIPTION¶
returns the content of the n'th subexpression of the last successful use of the =~ regex matching operator. Returns an empty string if the n'th subexpression was not matched (e.g. due to alternation). Throws an error if the last use of =~ was a failed match, or if fewer than n subexpressions are present in the original regexp.
SEE ALSO0¶
tapset::regex(3stap)
| October 2018 | SystemTap Tapset Reference |