I copy and pasted an git clone command from a web page: https://fedorahosted.org/ibus-typing-booster/
I got this:
user@host> git clone http://git.fedorahosted.org/git/ibus-typing-booster.git
Cloning into 'ibus-typing-booster'...
fatal: I don't handle protocol 'http'
I copied and pasted the whole line git clone http://...
.
The character between git clone
and http://...
looks like a space, but it is a special Unicode character!
Short answer: After removing this character, and entering a real space, it worked!
For people who love details: I see two ways to reveal ascii vs special-unicode-characters
Here is the real line:
vi t.txt # copy+paste the line
python
open('t.txt').read()
git clone \xe2\x80\x8b\xe2\x80\x8bhttp://...
vi t.txt # copy+paste the line
LESSCHARSET=ascii less vi.txt
If it looks like git clone <E2><80><8B><E2><80><8B>http://
, then you copy+pasted special-unicode-characters.