1267160 - Typing a "\" in the URL bar can cause the dropdown text to display incorrectly

Status: RESOLVED DUPLICATE of bug 1233672

(Firefox :: Address Bar, defect)

Description

[u569735]

User Agent: Mozilla/5.0 (Windows NT 6.3; rv:45.0) Gecko/20100101 Firefox/45.0
Build ID: 20160315153207

Steps to reproduce:

This bug can be reproduced easily with the following steps.

1. Type a URL into the address/search bar, including the forward slash at the end
2. Type a backslash after it.

This will only occur in certain situations, listed below (not extensively, there may be more):
* example.com/\
* example.com/alphabeticalcharacters\
* example.com/123456789\
* example.com/most symbols too !@$%^&*(){}|\"';:<>,.\
* example./\
It does not occur with:
* example.com/
* example.com\
* example.com/\\
* example.com/#\ (or any thing that contains a #, e.g. example.com/abcd#efg\)
* example.com/?\ (same as above, example.com/abc?\ doesn't trigger the bug)
* .com/\ (only happens with something before a dot)
* /\

The pattern that I can see seems to be:

a string containing either an alphabetical char or a . symbol, no other symbols work

before a . character

something can be here, but doesn't have to be

then a / character

again, anything can be here

then a \ character

finally, anything can even be after the backslash

Seemingly, a single ? or a # anywhere in the URL prevents the bug from triggering. 
Whoops. Intereestingly I just found that they don't do so if types after the backslash. e.g. "example.com/?\" bugs out, but"example.com/\?" works normally.


Actual results:

when typing example.com/\
The URL bar dropdown (activated by typing or pressing the Down arrow) displays 

Visit {"url":"http://example.com/\","input":"example.com/\\"}




Expected results:

The bar should display 

Visit http://example.com/\

Comment 1

[u569735]

Forgot to include in the post: I can't remember exactly, but I remember seeing this bug a while ago (Update 42 or 43). Also, I can still reproduce it in Safe mode.

This is on a 32-bit Windows 8.1 laptop with Firefox 45.0.1.