Function: viper-looking-back

viper-looking-back is a function alias for looking-back, defined in subr.el.gz.

This function is obsolete since 24.4; use looking-back instead.

Signature

(viper-looking-back REGEXP &optional LIMIT GREEDY)

Documentation

Return non-nil if text before point matches regular expression REGEXP.

Like looking-at except matches before point, and is slower. LIMIT if non-nil speeds up the search by specifying a minimum starting position, to avoid checking matches that would start before LIMIT.

If GREEDY is non-nil, extend the match backwards as far as possible, stopping when a single additional previous character cannot be part of a match for REGEXP. When the match is extended, its starting position is allowed to occur before LIMIT.

As a general recommendation, try to avoid using looking-back wherever possible, since it is slow.

Aliases

viper-looking-back (obsolete since 24.4) org-looking-back (obsolete since 9.0) verilog-looking-back