1338991 - FF performs unwanted URL-escaping of URLs during copy-paste (FFAC preference setting to the contrary is ignored)

Status: RESOLVED DUPLICATE of bug 1320061

(Core :: Networking, defect)

Description

[ropers+github.com]

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:51.0) Gecko/20100101 Firefox/51.0
Build ID: 20170201180315

Steps to reproduce:

Bug: FF performs unwanted URL-escaping of URLs during copy-paste (FFAC preference setting to the contrary is ignored)

FF version: 51.0.1 (64-bit) on ubuntu 16.04 LTS

Steps to reproduce:
 1. Vist https://ru.wikipedia.org/wiki/Кипр
 2. Copy URL.
 3. Paste URL into text editor.
 Observed result: URL is pasted as https://ru.wikipedia.org/wiki/%D0%9A%D0%B8%D0%BF%D1%80
 Expected result: URL should have been pasted as https://ru.wikipedia.org/wiki/Кипр

Partial work-around #1:
 Set network.standard-url.escape-utf8 to false in FFAC (Firefox about:config)
 Caution: Ordinary copying & pasting as per above still fails to produce the expected result, however the following does:
 1. Enter http://ru.wikipedia.org/wiki/Кипр (HTTP, not HTTPS)--> Site will auto-redirect to HTTPS
 2. Copy URL.
 3. Paste URL into text editor.
 Observed result: If and only if the URL that was entered before the site auto-redirected to HTTPS actually was a HTTP 
 URL, then the URL does actually get pasted as https://ru.wikipedia.org/wiki/Кипр at this point, i.e. the FFAC preference 
 setting is honoured.
 Related FFAC settings:
 network.standard-url.escape-utf8 --> false
 network.standard-url.encode-utf8 (default)
 dom.url.encode_decode_hash (default)
 dom.url.getters_decode_hash (default)	

Partial work-around #2:
 Instead of copying and pasting the full https://ru.wikipedia.org/wiki/Кипр, copy and paste only 
 ttps://ru.wikipedia.org/wiki/Кипр (as in w/o leading h)
 and type the h manually. 
 Observed result: The unwanted URL-escaping will not occur. 
 (This work-around does NOT require having the network.standard-url.escape-utf8 FFAC preference set to false.)

Comment 1

[u408661]

Valentin, I think you've worked on this. Can you take a look?

Comment 2

[Valentin Gosu [:valentin] (he/him)]

This is "fixed" in Firefox 53 - see bug 1320061.
In order to get the behaviour you want, just set the browser.urlbar.decodeURLsOnCopy pref to true.