Element-android: Whitespace at the end of the password is not removed

[telmich]

If you paste the backup key password into riotx and there is a space at the end, it will be kept. As c&p from other apps might cause this, this causes unexpected user experience.

Tested on 0.16.0

[bmarty]

Space is a valid character for passwords in lmatrix world, and we cannot take the responsibility to trim what user is entering, else, some users will be stucked

[telmich]

What if you add the following logic to riotx:

• try logging in with whitespace at beginning and end not trimmed
• if that fails: try logging in with whitespace at beginning and end trimmed

This way there is no surprise for users who copied & pasted their password and neither for the (I assume very rare) cases when someone has a leading or ending whitespace.

[bmarty]

Password field has a reveal button (an eye), user can see the password in clear and detect a possible mistake with spaces.
I'm not sure it's a good idea to try several trimmed password, but why not...
We could also add a warning under the password field if a space is detected at beginning or end of password, the same way computer warn if the CAPS lock is on when entering password.

[telmich]

If you want to be very explicit, maybe the last variant is the best, notifying the user of something that might possible go wrong.

[bpcurse]

I'm not sure it's a good idea to try several trimmed password, but why not...

True, it could trigger security mechanisms in very sensitive setups