Why special characters added when to copy and paste from leafpad into console?

Question

There are one character string line in my leafpad.

sudo apt-get install ctags

When to copy and paster it with mouse into command console,0~ was added at the beginning of the character string line ,and 1~ was added at the end of it,sudo apt-get install ctags turns out to be 0~sudo apt-get install ctags1~. Why and how to fix it?

Answer 1

Looks like bracketed paste mode is enabled.
In this case, enter the following command in your terminal to disable it

printf "\e[?2004l"

If your are interested in this feature, here is a nice introduction:
bracketed paste mode