fish in emacs will start with some messages

[c02y]

When I use shell (not eshell or ansi-term or term) in Emacs, it will execute fish as shell,

1). it will definitely start with these messages in the shell buffer:

 ^[]0;fish  /home/chz^Gbind: Key with name “down” does not have any mapping
 bind: Key with name “up” does not have any mapping
 bind: Key with name “right” does not have any mapping
 bind: Key with name “left” does not have any mapping
 bind: Key with name “dc” does not have any mapping
 bind: Key with name “backspace” does not have any mapping
 bind: Key with name “ppage” does not have any mapping
 bind: Key with name “npage” does not have any mapping

2). And every time I run a command (such as ls) in it, it will insert a message at the beginning of the output:

^[]0;ls  /home/chz/dir^Gfile1 file2 ...

3). Every time I run a command (such as ls or even just Enter), it will list double lines of chz@localhost ~> ls or chz@localhost ~> then the output of the commands.

These all will happen whether or not my config.fish file is empty ( I remove all ~/.config/fish away).

[zanchey]

What version are you running? #1155 covers the first problems but is not in a released version.

What does echo $TERM output?

[c02y]

# in terminal:
$ echo $TERM
xterm-256color
$ fish --version 
fish, version 2.1.1

# in shell of Emacs
$ echo $TERM
^[�]0;echo  /home/chz�^Gdumb

According to 7d34501, I edited /usr/share/fish/functions/__fish_config_interactive.fish manually, the first problem is solved.

[zanchey]

OK, this looks like an attempt to write the window title to a terminal which doesn't support it. The heuristic for working out whether to write the title is not fantastic - the dumb terminal type should probably be added.

In the meantime, you can work around with something like this in your config.fish:

if test "$TERM" = "dumb"
    function fish_title; end
end

[c02y]

OK, not the ^[]0;fish /home/chz^G in every command's output is gone, the 2nd problem is solved.

The 3rd problem is still there. Any clue about the double lines?

[zanchey]

That might be #1411.

[c02y]

No, according to #1411, fish in ansi-term prints an extra "⏎", but as I said at the first beginning of this post, I'm using shell not ansi-term or eshell or term in Emacs, and there isn't any extra "⏎" in the output of commands in my shell, actually the extra "⏎" symbol and other extra abnormal messages exist in my ansi-term too, but I do not use it, so here my problem is in shell of Emacs.

Let me list some examples of this problem:

# this is my original text in the shell in Emacs, note that my prompt is in the second line, `|` is my cursor
chz@localhost: ~/Projects/Go/exercism-cli 
➤➤ |

# if I type `Enter` key at `|` symbol, it will be (including the original text):
chz@localhost: ~/Projects/Go/exercism-cli 
➤➤ 
chz@localhost: ~/Projects/Go/exercism-cli 
➤➤
chz@localhost: ~/Projects/Go/exercism-cli 
➤➤ |

# if I type ls after the original text, it will be (including the original text):
chz@localhost: ~/Projects/Go/exercism-cli 
➤➤ ls
chz@localhost: ~/Projects/Go/exercism-cli 
chz@localhost: ~/Projects/Go/exercism-cli 
➤➤ ls
cli/  README
chz@localhost: ~/Projects/Go/exercism-cli 
➤➤ |

NOTE:
I created a new issue, please go to #1913 since this problem is far from original post's title.

[zanchey]

Leaving this open to track the second problem.