fill adds one too many spaces on Windows Terminal when used with cmd_duration

[matt-FFFFFF]

Bug Report

Current Behavior

Using fill with cmd_duration. Fill adds one too many spaces when the cmd_duration is formatted like this:

"[[](fg:#5C7F6A)⏱️ $duration[](fg:#5C7F6A)]($style)"

Expected Behavior

First line of prompt to be correctly padded by fill.

Additional context/Screenshots

Screenshot with default format vs. my custom format:

Note: Happens on Windows Terminal, does not happen on iTerm or Warp on MacOS

Possible Solution

Workaround is to add extra space to end of cmd_duration format string.

Environment

• Starship version: [the output of starship --version]

❯  starship --version
starship 1.18.2
branch:master
commit_hash:
build_time:2024-03-29 15:44:42 +00:00
build_env:rustc 1.77.1 (7cf61ebde 2024-03-27),

• Shell type: zsh
• Shell version: zsh 5.8.1 (x86_64-ubuntu-linux-gnu)
• Shell plugin manager: n/a
• Terminal emulator: Windows Terminal
• Operating system: Ubuntu 22.04.3 LTS

Relevant Shell Configuration

# Your configuration here

Starship Configuration

# Get editor completions based on the config schema
"$schema" = 'https://starship.rs/config-schema.json'

format = """\
[](fg:#C2B4DF)\
$os\
$sudo\
$shell\
[](fg:#C2B4DF bg:#8A5A7F)\
$directory\
[](fg:#8A5A7F bg:#8AAE7F)\
$git_branch\
$git_commit\
$git_status\
$git_state\
[](fg:#8AAE7F bg:#FBF39F)\
($git_metrics)\
[](fg:#FBF39F)\
$fill\
$status\
$all\
$cmd_duration\
$line_break\
$character"""

# disabled due to fill module
# right_format = ''
add_newline = true

[line_break]
disabled = false

[fill]
symbol = ' '

[os]
disabled = false
format = '[$symbol]($style)'
style = "#C2B4DF inverted"

[os.symbols]
Macos = " "
Windows = " "
Ubuntu = " "

[sudo]
disabled = false
symbol = "🧙"
format = '[$symbol ]($style)'
style = "bg:#C2B4DF"

[shell]
disabled = false
zsh_indicator = ''
powershell_indicator = ''
style = 'fg:#C2B4DF inverted'
format = '[$indicator ]($style)'

[directory]
format = "[ \uf07c  $path ]($style)"
style = "fg:#E4E4E4 bg:#8A5A7F"

[git_branch]
format = '[ $symbol$branch(:$remote_branch) ]($style)'
symbol = "  "
style = "fg:#1C3A5E bg:#8AAE7F"

[git_status]
format = '([\[$all_status$ahead_behind\]]($style))'
style = "fg:#1C3A5E bg:#8AAE7F"

[git_commit]
disabled = false
format = '[\((#$hash)$tag\)]($style)'
tag_disabled = false
only_detached = true
style = "fg:#1C3A5E bg:#8AAE7F"

[git_metrics]
format = '([ +$added ]($added_style))([-$deleted ]($deleted_style))'
added_style = "fg:#1C3A5E bg:#FBF39F"
deleted_style = "fg:red bg:#FBF39F"
disabled = false

[cmd_duration]
disabled = false
format = "[[](fg:#5C7F6A)⏱️ $duration[](fg:#5C7F6A)]($style)"
style = "#5C7F6A inverted"

[character]
success_symbol = '[❯](bold #C2B4DF) '
error_symbol = '[❯](bold purple) '

[time]
disabled = true
time_format = "%R" # Hour:Minute Format
style = "bg:#1d2230"
format = '[[ 󱑍 $time ](bg:#1C3A5E fg:#8DFBD2)]($style)'

[azure]
disabled = false
format = '[](fg:#3376CD)[$symbol($subscription)]($style)[](fg:#3376CD)'
style = 'fg:#3376CD bold inverted'
symbol = '󰠅 '

[golang]
disabled = false
format = '[](fg:cyan)[$symbol($version )]($style)[](fg:cyan)'
style = 'fg:cyan inverted'
symbol = ' '

[status]
disabled = false
symbol = '🔴 '
success_symbol = ''
format = '[$symbol( $common_meaning )$signal_name$maybe_int]($style) '
map_symbol = true

[terraform]
symbol = '󱁢 '
format = '[](fg:105)[$symbol$version( $workspace)]($style)[](fg:105)'
style = 'fg:105 inverted'

[DerRockWolf]

From what I can tell this is unrelated to cmd_duration and also not only specific to the windows terminal.
I also experience the same issue with any module that I've changed to contain an emoji with the default gnome terminal and MesloLGS Nerd Font.

It happens when the prompt includes a symbol/emoji that consists of multiple UTF codepoints e.g., ❄️ (which is \U2744\UFE0F)