Function genFishComp

fish_completions.go:25–273

(buf io.StringWriter, name string, includeDesc bool)

)

func genFishComp(buf io.StringWriter, name string, includeDesc bool) {
	// Variables should not contain a '-' or ':' character
	nameForVar := name
	nameForVar = strings.ReplaceAll(nameForVar, "-", "_")
	nameForVar = strings.ReplaceAll(nameForVar, ":", "_")

	compCmd := ShellCompRequestCmd
	if !includeDesc {
		compCmd = ShellCompNoDescRequestCmd
	}
	WriteStringAndCheck(buf, fmt.Sprintf("# fish completion for %-36s -*- shell-script -*-\n", name))
	WriteStringAndCheck(buf, fmt.Sprintf(`
function __%[1]s_debug
    set -l file "$BASH_COMP_DEBUG_FILE"
    if test -n "$file"
        echo "$argv" >> $file
    end
end

function __%[1]s_perform_completion
    __%[1]s_debug "Starting __%[1]s_perform_completion"

    # Extract all args except the last one
    set -l args (commandline -opc)
    # Extract the last arg and escape it in case it is a space
    set -l lastArg (string escape -- (commandline -ct))

    __%[1]s_debug "args: $args"
    __%[1]s_debug "last arg: $lastArg"

    # Disable ActiveHelp which is not supported for fish shell
    set -l requestComp "%[10]s=0 $args[1] %[3]s $args[2..-1] $lastArg"

    __%[1]s_debug "Calling $requestComp"
    set -l results (eval $requestComp 2> /dev/null)

    # Some programs may output extra empty lines after the directive.
    # Let's ignore them or else it will break completion.
    # Ref: https://github.com/spf13/cobra/issues/1279
    for line in $results[-1..1]
        if test (string trim -- $line) = ""
            # Found an empty line, remove it
            set results $results[1..-2]
        else
            # Found non-empty line, we have our proper output
            break
        end
    end

    set -l comps $results[1..-2]
    set -l directiveLine $results[-1]

    # For Fish, when completing a flag with an = (e.g., <program> -n=<TAB>)
    # completions must be prefixed with the flag
    set -l flagPrefix (string match -r -- '-.*=' "$lastArg")

    __%[1]s_debug "Comps: $comps"
    __%[1]s_debug "DirectiveLine: $directiveLine"