vc-string-prefix-p

vc-string-prefix-p is an alias for `string-prefix-p' in `vc.el'.

(vc-string-prefix-p PREFIX STRING &optional IGNORE-CASE)

This function is obsolete since 24.3;
use `string-prefix-p' instead.

Return non-nil if PREFIX is a prefix of STRING.
If IGNORE-CASE is non-nil, the comparison is done without paying attention
to case differences.