tree c3ecd44a815ee5bf7a43ae70b910f1c8214c1dd6
parent d61dd50441c6e2d3595be435b162ca96c58848f9
author Marcel van Lohuizen <mpvl@golang.org> 1686137729 +0200
committer Russ Cox <rsc@golang.org> 1686588937 +0000

internal/export/idna: make more space for mapping index

This prepares for an upcoming Unicode upgrade.

Beyond Unicode 13 the size of mappings will grow beyond
what can be represented in the allocated 13 bits. Instread
of doubling the size of info, we introduce a table of indices
into the mappings data. This also allows us to remove the
length byte, reducing the overhead of introducing this new
table.

This change allows for about a 5x growth of the number
of mappings, which should suffice for the foreseeable
future.

Change-Id: Id475dc2473145a1f36bd83b983fa4aa170df6206
Reviewed-on: https://go-review.googlesource.com/c/text/+/501515
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>