Syncthing: api: /rest/system/browse behaves strangely on Windows

[norgeous]

Version Information

Syncthing Version: v0.13.4
OS Version: Windows 10 / Windows (64 bit)

What happened:

URL: http://127.0.0.1:8384/rest/system/browse?
RESPONSE: ["etc\\","extra\\","metadata\\"]
EXPECTED: a list of drives?
BUG: it presents the contents of the Syncthing executable folder

URL: http://127.0.0.1:8384/rest/system/browse?current=C:%5C (5C = backslash)
RESPONSE: ["C:etc\\","C:extra\\","C:metadata\\"]
EXPECTED: contents of C:\ root folder
BUG: it presents the contents of the Syncthing executable folder, but with C: prepended

URL: http://127.0.0.1:8384/rest/system/browse?current=C:%2F (2F = forwardslash)
RESPONSE: ["C:etc\\","C:extra\\","C:metadata\\"]
EXPECTED: contents of C:\ root folder
BUG: it presents the contents of the Syncthing executable folder, but with C: prepended

URL: http://127.0.0.1:8384/rest/system/browse?current=G:%5C
RESPONSE: ["G:$RECYCLE.BIN\\","G:Steam\\","G:System Volume Information\\"]
EXPECTED: ["G:\\$RECYCLE.BIN\\","G:\\Steam\\","G:\\System Volume Information\\"]
BUG: it is missing the escaped backslash between the drive and folder name. This happens for all drive root folders, going one folder deeper and it returns the correct full paths.

Summary

• /rest/system/browse api calls to all drive folders on Windows are missing an escaped backslash between the drive and folder name.
• /rest/system/browse calls to C:\ in any form return as if they were the Syncthing exe folder.
  

  Screenshots

Double clicking in the Folder Path field produces:

Why

I would like this fixed so that I can then attempt https://github.com/syncthing/syncthing/issues/2958 with https://www.jstree.com/demo/

[AudriusButkevicius]

This is an issue upstream:

https://github.com/golang/go/issues/15863

As a workaround for Windows, just use double slashes until we fix it.

[norgeous]

yes good, http://127.0.0.1:8384/rest/system/browse?current=C:%5C%5C looks like it returns the contents properly. Thanks.

Once that golang bug is fixed, will http://127.0.0.1:8384/rest/system/browse? return the list of drives?

[AudriusButkevicius]

Given you are interested in spending time on this, assume that yes, no arguments will return th drives available.

I'll produce the code shortly.