tree db6f3a551a1ee27721a7b97832c57a6946a87b22
parent f1b1ff53e10e288d0ab6f161067c0a69b72cee28
author Nigel Tao <nigeltao@golang.org> 1482320325 +1100
committer Nigel Tao <nigeltao@golang.org> 1482966711 +0000

font: fix rectangle-union for empty rectangles.

The bounding box of a string does not necessarily contain the origin.
Prior to this commit, BoundString(etc, "x") would call grow exactly
once, with the first argument being the (empty) zero rectangle.

Change-Id: Id7d4f6c250ac0749f6dae19d11f4e97f9c6f45bc
Reviewed-on: https://go-review.googlesource.com/34674
Reviewed-by: Dave Day <djd@golang.org>