code review 3423043: fmt: add %U format for standard Unicode representation ...

fmt: add %U format for standard Unicode representation of integer values.
	fmt.Printf("%U", 1) yields "U+0001"
It's essentially "U+%.4x" but lets you override the precision works in scan, too.

[r, 2010-12-04 22:51:43]

Hello rsc (cc: golang-dev@googlegroups.com),

I'd like you to review this change.

[rsc1, 2010-12-06 19:20:03]

LGTM

motivation seems a little weak but okay.
it is a standard format.

http://codereview.appspot.com/3423043/diff/1/src/pkg/fmt/doc.go
File src/pkg/fmt/doc.go (right):

http://codereview.appspot.com/3423043/diff/1/src/pkg/fmt/doc.go#newcode29
src/pkg/fmt/doc.go:29: %U    unicode format: U+1234; same as "U+%x" with 4
digits default
likely bad spacing (tab vs space after %U)

[r, 2010-12-06 19:23:39]

*** Submitted as http://code.google.com/p/go/source/detail?r=e2d2cc32574d ***

fmt: add %U format for standard Unicode representation of integer values.
	fmt.Printf("%U", 1) yields "U+0001"
It's essentially "U+%.4x" but lets you override the precision works in scan,
too.

R=rsc
CC=golang-dev
http://codereview.appspot.com/3423043