keybindings can't switch to foreground normally >1 times

[rbong]

Concerning job control: I have a keybinding which switches to the job in the foreground. When used once, it works correctly, but if used a second time, fish requires that the enter key is pressed before it reads any input, including keybindings.

Reproduction Steps:

1. bind \cf fg
2. man man
3. C^Z C^F C^Z C^F

Alternatively

1. bind \cf fg
2. man man
3. C^Z C^F
4. Exit the program

Expected behavior:

The command "man man" becomes active in the foreground.

Alternatively

The program is exited and the command prompt is activated.

Observed behavior:

fish does not execute any input until the enter key is pressed. Syntax highlighting is broken and the prompt is not activated.

Additional information:

Ran with an empty fish configuration.

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Fish version: 2.2.0

Operating system: Linux 4.4.1-2-ARCH x86_64 GNU/Linux

Terminal or terminal emulator: tested on st and urxvt

[faho]

This is a duplicate of #2114 - though the title there probably isn't great.

[rbong]

Thank you. The issue should be easier to find now.