The old loop was a bit odd; change it to be more regular.
This also enables a diagnostic for Printf("%", 3): %!(NOVERB)
R=rsc, Kyle C
CC=golang-dev
https://golang.org/cl/3749044
I have written a tool to verify Printf calls, and although it's not
ready to be reviewed yet it's already uncovered a spate of problems
in the repository. I'm sending this CL to break the changes into
pieces; as the tool improves it will find more, I'm sure.
R=rsc
CC=golang-dev
https://golang.org/cl/3427043
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
https://golang.org/cl/3423043
Rather than updating the stripped-down regexp implementation embedded
in testing, delete it by passing the one function we need from the package
main file created by gotest.
R=rsc
CC=golang-dev
https://golang.org/cl/2761043
This crops up in a lot of places.
It's just a one-liner, but doesn't add any dependancies.
Seems worth it.
R=r, r2
CC=golang-dev
https://golang.org/cl/2344041
the solution must work around a weakness in the reflection library:
there is no way to do type-safe conversions under reflection.
R=rsc
CC=golang-dev
https://golang.org/cl/2000041
While we're at it, clean up and test the code to guarantee we see every byte when
the text is erroneous UTF-8.
Fixes#866.
R=rsc
CC=golang-dev
https://golang.org/cl/1712042
This shortens, simplifies and regularizes the code significantly.
(Improvements to reflect could make another step.)
Passes all.bash.
One semantic change occurs: The String() method changes
behavior. It used to run only for string formats such as %s and %q.
Instead, it now runs whenever the item has the method and the
result is then processed by the format as a string. Besides the
regularization, this has three effects:
1) width is honored for String() items
2) %x works for String() items
3) implementations of String that merely recur will recur forever
Regarding point 3, example from the updated documentation:
type X int
func (x X) String() string { return Sprintf("%d", x) }
should cast the value before recurring:
func (x X) String() string { return Sprintf("%d", int(x)) }
R=rsc
CC=golang-dev
https://golang.org/cl/1613045
Also fix an interface bug: white-space-delimited doesn't work well for cases like "%d, %d" on "23, 23")
R=rsc
CC=golang-dev
https://golang.org/cl/1502041
- implement scanning for all renamed types
(compiler bug stops complex from being renamable,
so it can't be tested but the code is there)
- %q %x for strings
- error handling now done with panic/recover
R=rsc
CC=golang-dev
https://golang.org/cl/1458041
- implement scanning for all renamed types
(compiler bug stops complex from being renamable,
so it can't be tested but the code is there)
- %q %x for strings
- error handling now done with panic/recover
R=rsc
CC=golang-dev
https://golang.org/cl/1458041
- reimplement integer scanning to handle renamed basic integer types
- start implementation of Fscanf and Scanf; not yet ready for general use.
This intermediate CL is a useful checkpoint. A similar change needs to be
done for float and complex, but it seemed worth getting the approach
reviewed before making those changes.
R=rsc
CC=golang-dev
https://golang.org/cl/1418041
