49 lines
2.4 KiB
Fish
49 lines
2.4 KiB
Fish
# helper for _fzf_search_git_status
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# arg should be a line from git status --short, e.g.
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# MM functions/_fzf_preview_changed_file.fish
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# D README.md
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# R LICENSE -> "New License"
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function _fzf_preview_changed_file --argument-names path_status --description "Show the git diff of the given file."
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# remove quotes because they'll be interpreted literally by git diff
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# no need to requote when referencing $path because fish does not perform word splitting
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# https://fishshell.com/docs/current/fish_for_bash_users.html
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set -f path (string unescape (string sub --start 4 $path_status))
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# first letter of short format shows index, second letter shows working tree
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# https://git-scm.com/docs/git-status/2.35.0#_short_format
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set -f index_status (string sub --length 1 $path_status)
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set -f working_tree_status (string sub --start 2 --length 1 $path_status)
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set -f diff_opts --color=always
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if test $index_status = '?'
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_fzf_report_diff_type Untracked
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_fzf_preview_file $path
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else if contains {$index_status}$working_tree_status DD AU UD UA DU AA UU
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# Unmerged statuses taken directly from git status help's short format table
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# Unmerged statuses are mutually exclusive with other statuses, so if we see
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# these, then safe to assume the path is unmerged
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_fzf_report_diff_type Unmerged
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git diff $diff_opts -- $path
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else
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if test $index_status != ' '
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_fzf_report_diff_type Staged
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# renames are only detected in the index, never working tree, so only need to test for it here
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# https://stackoverflow.com/questions/73954214
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if test $index_status = R
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# diff the post-rename path with the original path, otherwise the diff will show the entire file as being added
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set -f orig_and_new_path (string split --max 1 -- ' -> ' $path)
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git diff --staged $diff_opts -- $orig_and_new_path[1] $orig_and_new_path[2]
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# path currently has the form of "original -> current", so we need to correct it before it's used below
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set path $orig_and_new_path[2]
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else
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git diff --staged $diff_opts -- $path
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end
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end
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if test $working_tree_status != ' '
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_fzf_report_diff_type Unstaged
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git diff $diff_opts -- $path
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end
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end
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end
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