net/url: allow all valid host chars in RawPath

The old code was only allowing the chars we choose not to escape.
We sometimes prefer to escape chars that do not strictly need it.
Allowing those to be used in RawPath lets people override that
preference, which is in fact the whole point of RawPath (new in Go 1.5).

While we are here, also allow [ ] in RawPath.
This is not strictly spec-compliant, but it is what modern browers
do and what at least some people expect, and the [ ] do not cause
any ambiguity (the usual reason they would be escaped, as they are
part of the RFC gen-delims class).
The argument for allowing them now instead of waiting until Go 1.6
is that this way RawPath has one fixed meaning at the time it is
introduced, that we should not need to change or expand.

Fixes #5684.

Change-Id: If9c82a18f522d7ee1d10310a22821ada9286ee5c
Reviewed-on: https://go-review.googlesource.com/13258
Reviewed-by: Andrew Gerrand <adg@golang.org>
2 files changed
tree: a5bcc2f104eb3da8ccacd905b38dc1a8dc72ad0a
  1. api/
  2. doc/
  3. lib/
  4. misc/
  5. src/
  6. test/
  7. .gitattributes
  8. .gitignore
  9. AUTHORS
  10. CONTRIBUTING.md
  11. CONTRIBUTORS
  12. favicon.ico
  13. LICENSE
  14. PATENTS
  15. README.md
  16. robots.txt
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