Fuzzy finder

Find

def find -params 1 -shell-candidates %{ find -type f } %{ edit %arg{1} }

Recursive file search under %opt{path} option

define-command -override -docstring \
"file-search-rec <filename>: search for file recusively under path option: %opt{path}" \
file-search-rec -params 1 %{ evaluate-commands %sh{
    file=$1
    eval "set -- $kak_buflist"
    while [ $# -gt 0 ]; do            # Check if buffer with this
        if [ "$file" = "$1" ]; then   # file already exists. Basically
            printf "%s\n" "buffer $1" # emulating what edit command does
            exit
        fi
        shift
    done
    if [ -e "$file" ]; then                     # Test if file exists under
        printf "%s\n" "edit -existing %{$file}" # servers' working directory
        exit                                    # this is last resort until
    fi                                          # we start recursive searchimg

    # if everthing  above fails - search for file under path
    eval "set -- $kak_opt_path"
    while [ $# -gt 0 ]; do
        case $1 in                        # Since we want to check fewer places
            ./) path=${kak_buffile%/*} ;; # I've swapped ./ and %/ because
            %/) path=$PWD ;;              # %/ usually has smaller scope. So
            *)  path=$1 ;;                # this trick is a speedi-up hack.
        esac
        if [ -z "${file##*/*}" ]; then # test if filename contains path
            [ -e "$path/$file" ] && result="$path/$file"
        else # get first match with find
            result=$(find -L $path -mount -type f -name "$file" | head -n 1)
        fi
        if [ ! -z "$result" ]; then
            printf "%s\n" "edit -existing %{$result}"
            exit
        fi
        shift
    done
    printf "%s\n" "echo -markup %{{Error}unable to find file '$file'}"
}}

This command can also be mapped to gf keeping old behavior with gAlt+f:

map -docstring "file non-recursive" global goto '<a-f>' '<esc>gf'
map -docstring "file" global goto 'f' '<esc>: file-search-rec %reg{dot}<ret>'

Git

def git-edit -params 1 -shell-candidates %{ git ls-files } %{ edit %arg{1} }

FZF

fzf is a basic fuzzy finder tool used to interactively filter large lists of data in a shell.

In the following snippets, a tmux pane is opened with fzf ready to filter a list of files and a list of current buffers.

Other kakoune lists could be filtered this way, taking fzf.vim as inspiration.

define-command -docstring 'Invoke fzf to open a file' -params 0 fzf-edit %{
    evaluate-commands %sh{
        if [ -z "${kak_client_env_TMUX}" ]; then
            printf 'fail "client was not started under tmux"\n'
        else
            file="$(find . -type f |TMUX="${kak_client_env_TMUX}" fzf-tmux -d 15)"
            if [ -n "$file" ]; then
                printf 'edit "%s"\n' "$file"
            fi
        fi
    }
}

# the original version no longer works since kak_buflist is no longer ":" separated.
# this one works even you have single quote or newline in file names.

define-command -docstring 'Invoke fzf to select a buffer' fzf-buffer %{
    evaluate-commands %sh{
        BUFFER=$(
            (
                eval "set -- $kak_buflist"
                while [ $# -gt 0 ]; do
                    printf "%s\0" "$1"
                    shift
                done
            ) |
            fzf-tmux -d 15 --read0
        )
        BUFFER=${BUFFER/\'/\'\'}
        if [ -n "$BUFFER" ]; then
            printf "buffer '%s'" "${BUFFER}"
        fi
    }
}

fzf.kak

There's also a fzf.kak plugin, that includes such features:

• Supports both x11 and tmux
• Opening files with find, fd, rg, ag
• Previewing file contents with syntax highlighting, backed by bat, coderay, highlight, rogue`
• Switching buffers
• Automatic detection of your VCS to list project files. Supports:
  • Git
  • GNU Bazaar
  • Subversion
  • Mercurial
• Searching tags with universal-ctags
  • Filtering tags by kinds for all ctags supported languages
• Searching current buffer contents
• Changing server's working directory

Rofi

Select an open buffer using Rofi

define-command rofi-buffers \
-docstring 'Select an open buffer using Rofi' %{ %sh{
    BUFFER=$(printf %s\\n "${kak_buflist}" | tr : '\n' | rofi -dmenu)
    if [ -n "$BUFFER" ]; then
    	echo "eval -client '$kak_client' 'buffer ${BUFFER}'" | kak -p ${kak_session}
    fi
} }  

Using Ag + Rofi to select files in your project directory.

define-command rofi-files \
-docstring 'Select files in project using Ag and Rofi' %{ %sh{
    FILE=$(ag -g "" | rofi -dmenu)
    if [ -n "$FILE" ]; then
        printf 'eval -client %%{%s} edit %%{%s}\n' "${kak_client}" "${FILE}" | kak -p "${kak_session}"
    fi
} }

Fast file finder: fasd integration

Add function k () kak `fasd -f $1` to your .zshrc to open frecent files with k filename