**Added:** None

**Changed:**

* The following commands are, by default, predicted to be not threadable
  in some circumstances:

    * bash
    * csh
    * clear
    * clear.exe
    * cls
    * cmd
    * fish
    * htop
    * ksh
    * less
    * man
    * more
    * mutt
    * nano
    * ranger
    * scp
    * sh
    * ssh
    * startx
    * sudo
    * tcsh
    * top
    * vi
    * vim
    * vimpager
    * xo
    * xonsh
    * zsh

**Deprecated:** None

**Removed:** None

**Fixed:** None

**Security:** None