Starship: Fish - On completion, the cursor is being moved left

[m0nhawk]

Current Behavior

• Cursor is placed symbol on the left from position it was. The position is related to a number of languages added.

Gif record:

Position of cursor before and after <TAB> for 3 loaded modules:

test on  master [?] is 📦 v0.4.3 via 🐍 v2.7.16 via 🌳 v0.19.1 ❯ git 
                                                                      ^
test on  master [?] is 📦 v0.4.3 via 🐍 v2.7.16 via 🌳 v0.19.1 ❯ git 
                                                                   ^

Expected Behavior

• Cursor shouldn't move on tab completion

Additional context/Screenshots

• It only happens when some language specific module is loaded (in current example, Elm)

Possible Solution

Environment

• Starship version: 0.41.3
• fish version: fish, version 3.1.2
• Operating system: Mac OS 10.15.5
• Terminal emulator: iTerm.app 3.3.9

Relevant Shell Configuration

set fish_greeting

function fish_right_prompt
  # intentionally left blank
end

starship init fish | source

source ~/.iterm2_shell_integration.fish

Starship Configuration

# Don't print a new line at the start of the prompt
add_newline = false
clear_before_printing = true
prompt_order=["username", "directory", "git_branch", "git_status", "package", "nodejs", "ruby", "rust", "python", "haskell", "elm", "golang", "cmd_duration", "jobs", "battery", "character",]

# Replace the "❯" symbol in the prompt with "➜"
[character]      # The name of the module we are confguring is "character"
#symbol = "➜"     # The "symbol" segment is being set to "➜"
error_symbol = "✗" # The symbol used before text input if the previous command failed
use_symbol_for_status = true # Indicate error status by changing the symbol

# Disables the line_break module, making the prompt a single line
[line_break]
disabled = true

[chipbuster]

Whoa, that's weird.

We see this sort of issue in zsh/bash fairly regularly when we've screwed up color escapes somewhere, but I don't think we've seen it in fish before.

Do you know which languages/modules cause this? It would help a lot in hunting things down.

[m0nhawk]

After some testing I found that for me it happening for the following modules: package, python, elm, golang.

The only module which didn't cause that: nodejs.

[matchai]

Looks like it happens for modules with emoji.
Can you please try running the following and seeing if it still happens:

set -g fish_emoji_width 2

[m0nhawk]

@matchai Wow! Nice catch.

I can't reproduce the issue with setting non-emoji symbols for Python/Elm/etc, so it's definitely because of the emoji.

Looks like it has nothing to do with starship. :)