extmod/modre: Add support for start- and endpos.

Pattern objects have two additional parameters for the ::search and ::match
methods to define the starting and ending position of the subject within
the string to be searched.

This allows for searching a sub-string without creating a slice.  However,
one caveat of using the start-pos rather than a slice is that the start
anchor (`^`) remains anchored to the beginning of the text.

Signed-off-by: Jared Hancock <jared@greezybacon.me>

0 files changed, 0 insertions, 0 deletions