for structs, enums, and unions.
auto untagged unions are no longer printed as pointers; instead they are
printed as "{ ... }".
extern and packed untagged unions have each field printed, similar to
what gdb does.
also fix bugs in delimiter based reading
added adapter to AnyWriter and GenericWriter to help bridge the gap
between old and new API
make std.testing.expectFmt work at compile-time
std.fmt no longer has a dependency on std.unicode. Formatted printing
was never properly unicode-aware. Now it no longer pretends to be.
Breakage/deprecations:
* std.fs.File.reader -> std.fs.File.deprecatedReader
* std.fs.File.writer -> std.fs.File.deprecatedWriter
* std.io.GenericReader -> std.io.Reader
* std.io.GenericWriter -> std.io.Writer
* std.io.AnyReader -> std.io.Reader
* std.io.AnyWriter -> std.io.Writer
* std.fmt.format -> std.fmt.deprecatedFormat
* std.fmt.fmtSliceEscapeLower -> std.ascii.hexEscape
* std.fmt.fmtSliceEscapeUpper -> std.ascii.hexEscape
* std.fmt.fmtSliceHexLower -> {x}
* std.fmt.fmtSliceHexUpper -> {X}
* std.fmt.fmtIntSizeDec -> {B}
* std.fmt.fmtIntSizeBin -> {Bi}
* std.fmt.fmtDuration -> {D}
* std.fmt.fmtDurationSigned -> {D}
* {} -> {f} when there is a format method
* format method signature
- anytype -> *std.io.Writer
- inferred error set -> error{WriteFailed}
- options -> (deleted)
* std.fmt.Formatted
- now takes context type explicitly
- no fmt string
- flatten std.crypto.hash.Sha1 and give it a writable interface that
optimizes splats
- flatten std.hash.crc and give it a writable interface that optimizes
splats
- remove old writer impls from std.crypto
- add fs.File.Writer.moveToReader
- add fs.File.Writer.seekTo
- add std.io.Reader.Hashed and std.io.Writer.Hashed which are
passthrough streams. Instead of passing through to null writer, use
the writable interface implemented directly on hashers which doesn't
have to account for passing through the data.
- add std.io.BufferedWriter.writeSplatAll
and rename std.io.BufferedWriter.writableSlice to writableSliceGreedy
and make writableSlice and writableArray advance the buffer end position
introduce std.io.BufferedWriter.writeSplatLimit but it's unimplemented
