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Basic git improvements (#1082)

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Thanks to @Euphrasiologist for the prompt!

I found some bugs, and here are a few improvements.
1. Fix checking if currently in git repo (#1079)
2. Use `git branch --show-current` instead of `git rev-parse
--abbrev-ref HEAD` to get current branch
3. Refactor processing current status (relying on
https://git-scm.com/docs/git-status). Before, in some cases it leads to
unexpected behavior. (for example, when renaming or deleting files)
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Sergey 2025-04-14 15:59:27 +05:00 • committed by GitHub
parent d7adaf9880
commit c639113ade
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1 changed files with 33 additions and 42 deletions
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71
modules/prompt/basic-git.nu
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@ -1,70 +1,61 @@
# Max Brown
# a very basic git prompt
# sort of like panache-git, but fewer than 60 lines of code.
# It's a very basic git prompt,
# sort of like panache-git, but less than 50 lines of code.
# use as below without the comments and in your
# env.nu file
# Authors: Max Brown, @rukins
# Use as below without the comments and in your 'env.nu' file
# use path/to/basic-git.nu basic-git-left-prompt
# $env.PROMPT_COMMAND = {||
# let left = create_left_prompt
# basic-git-left-prompt $left
# }
def in_git_repo [] {
(do --ignore-errors { git rev-parse --abbrev-ref HEAD } | is-empty) == false
(git branch --show-current | complete | get stderr | is-empty) == true
}
export def basic-git-left-prompt [in_left_prompt] {
# if we're in a repo, let's go!
let currently_in_git_repo = in_git_repo
if $currently_in_git_repo {
# get the branch info first
let branch_info = git branch -l
| lines
| filter {|e| $e | str contains "*" }
| each {|e| $e | str replace "* " "="}
| get 0
let git_status = git status -s
let current_branch = $"(git branch --show-current)"
# get the status in short
let git_status = $git_status
let current_status = git status -s
| lines
| str replace -r '(.* ).*' '$1'
| sort
| str replace -r '^(.{2}).*' '$1'
| uniq -c
| insert type {
|e| if ($e.value | str contains "M") {
"blue_bold"
} else if ($e.value | str contains "??") {
"yellow_bold"
} else if ($e.value | str contains "D") {
"red_bold"
} else if ($e.value | str contains "A") {
"cyan_bold"
} else ""
| each {
|el| insert X { value: ($el.value | str substring ..0 | str trim) } | insert Y { value: ($el.value | str substring 1.. | str trim) }
}
| each {
|e| $"(ansi $e.type)($e.count)($e.value | str trim)(ansi reset)"
}
| reduce --fold '' {|str all| $"($all),($str)" }
| str substring 1..
let final_git_status = if $git_status == "" {
""
|el| if ([?, !] | any { |i| $el.X.value == $i and $el.Y.value == $i }) {
insert X.color "yellow_bold" | insert Y.color "yellow_bold"
} else if ($el.X.value == "M") {
insert X.color "blue_bold" | insert Y.color "purple_bold"
} else if ($el.X.value == "D") {
insert X.color "red_bold" | insert Y.color "purple_bold"
} else if ($el.X.value == "A") {
insert X.color "cyan_bold" | insert Y.color "purple_bold"
} else {
$" ($git_status)"
insert X.color "green_bold" | insert Y.color "purple_bold"
}
# construct the prompt
$"($in_left_prompt)(ansi reset) [($branch_info)($final_git_status)]"
### or use colors similar to original `git status -s` output
# |el| if ([?, !] | any { |i| $el.X.value == $i and $el.Y.value == $i }) {
# insert X.color "red_bold" | insert Y.color "red_bold"
# } else {
# insert X.color "green_bold" | insert Y.color "red_bold"
# }
}
| each {
|el| $"(ansi cyan_bold)($el.count)(ansi $el.X.color)($el.X.value)(ansi $el.Y.color)($el.Y.value)(ansi reset)"
}
| str join ","
$"($in_left_prompt)(ansi reset) [($current_branch)($current_status | if ($in | is-not-empty) { $' ($in)' })]"
} else {
# otherwise just return the normal prompt
$in_left_prompt
}
}