[truth in fish] #fish or #lyns

fish.example.truth.md

Truth in Fish/Lyns takes a bit of getting used to but is fairly elegant if done correctly:

function if-test-no-arg
  set var

  if set -q var
    # true
  end

  if set -q var[1]
    # false
  end

  # Always put quotation marks
  if test -n "$var"
    # false
  end

  if test -z "$var"
    # true
  end
end

function if-test-empty-arg
  set var ""

  if set -q var
    # true
  end

  if set -q var[1]
    # true
  end

  if test -n "$var"
    # false
  end

  if test -z "$var"
    # true
  end
end

function if-test-valid-arg
  set var "hello"

  if set -q var
    # true
  end

  if set -q var[1]
    # true
  end

  if test -n "$var"
    # true
  end

  if test -z "$var"
    # false
  end
end

function if-test-no-set
  if set -q var
    # false
  end

  if set -q var[1]
    # false
  end

  if test -n "$var"
    # false
  end

  if test -z "$var"
    # true
  end
end

truth.lynslang.lyns

/// still working on some fundamental cross-overs between fish and lyns languages.
/// my goal is that they can be totally interoperable, nearly there!

function __lyns_getver 
   set -gx fish_version_number "echo $FISH_VERSION | grep -ow  '\w\.\w\.\w'" 
   if test -z "$FISH_VERSION"; return 0; end; 
   if set -q $fish_version_number 
      return $fish_version_number 
   else 
     return 0 
   end; 
end; funcsave __lyns_getver; 
function __lynslang_getver 
   set -gx lyns_version_number "echo $LYNS_VERSION | grep -ow '\w\.\w\.\w'" 
   if test -z "$LYNS_VERSION"; return 0; end; 
   if set -q $lyns_version_number 
      return $lyns_version_number 
   else 
     return 0 
   end; 
    
end; funcsave __lynslang_getver; 
function __lynslang_status_fish 
      
    if test -z "$FISH_VERSION"  
        echo Fish Version environment variable is empty. 
        set fish_function_path $__fish_config_dir/functions $__fish_sysconf_dir/functions $vendor_functionsdirs $__fish_data_dir/functions 
    else  
        if set -q $fish_complete_path && not contains -- $__fish_data_dir/completions $fish_complete_path; 
            set -a fish_complete_path $__fish_data_dir/completions 
        end; 
        if set -q $FISH_VERSION && $FISH_VERSION  is '3.4.1' 
            echo "Latest Fish Version installed!" 
            echo "$fish_version_number" | fish 
        end  
        if set -q $FISH_VERSION && $FISH_VERSION not '3.4.1' 
            echo "Fish installed, but not the latest version!" 
            echo "$fish_version_number" | fish 
        end  
    end 
    if not set -q fish_function_path 
        set fish_function_path $__fish_config_dir/functions $__fish_sysconf_dir/functions $vendor_functionsdirs $__fish_data_dir/functions 
    else if not contains -- $__fish_data_dir/functions $fish_function_path 
        set -a fish_function_path $__fish_data_dir/functions 
    end 
    if not set -q fish_complete_path 
        set fish_complete_path $__fish_config_dir/completions $__fish_sysconf_dir/completions $vendor_completionsdirs $__fish_data_dir/completions $__fish_user_data_dir/generated_completions 
    else if not contains -- $__fish_data_dir/completions $fish_complete_path 
        set -a fish_complete_path $__fish_data_dir/completions 
    end 
end; funcsave __lynslang_status_fish; 
function __lynslang_status_lyns 
    if test -z "$LYNS_VERSION"  
        echo Lyns Version environment variable is empty. 
        set lyns_function_path $__lyns_config_dir/functions $__lyns_sysconf_dir/functions $vendor_functionsdirs $__lyns_data_dir/functions 
    else  
        if set -q $fish_complete_path && not contains -- $__fish_data_dir/completions $fish_complete_path; 
            set -a fish_complete_path $__fish_data_dir/completions 
        end; 
               
        if set -q $LYNS_VERSION && $LYNS_VERSION is '3.4.1' 
            echo "Latest Lyns Version installed!" 
            echo "$lyns_version_number" | lyns 
        end;  
        if set -q $LYNS_VERSION && $LYNS_VERSION not '3.4.1' 
            echo "Lyns installed, but not the latest version!" 
            echo "$lyns_version_number" | lyns 
        end  
    end 
    if not set -q lyns_function_path 
        set lyns_function_path $__lyns_config_dir/functions $__lyns_sysconf_dir/functions $vendor_functionsdirs $__lyns_data_dir/functions 
    else if not contains -- $__lyns_data_dir/functions $lyns_function_path 
        set -a lyns_function_path $__lyns_data_dir/functions 
    end 
    if not set -q lyns_complete_path 
        set lyns_complete_path $__lyns_config_dir/completions $__lyns_sysconf_dir/completions $vendor_completionsdirs $__lyns_data_dir/completions $__lyns_user_data_dir/generated_completions 
    else if not contains -- $__lyns_data_dir/completions $lyns_complete_path 
        set -a lyns_complete_path $__lyns_data_dir/completions 
    end 
end; funcsave __lynslang_status_lyns; 
function __lynslang_status 
    echo "Checking Fish/ Lyns Status, it's sorta like Csh only better.  Basically if you like python and abhor bourne shells, it is a great choice to play with. :)" 
    echo Lyns is simply a superset of Fish, but is tailored for Docker and Moby and NerdCTL and all things Buildkit, Docker-Compose, declarative Microservice architecture, DAPR, etc.  
    echo 'You do not need docker to use Lyns, we have a circumvention framework called "No.Docker" that allows you to build and run containers with no dependencies, written in Rust! ' 
    echo ' To learn more type ".x -paf nodocker".  This means to search the `.x` CLI using Pkg (packages) lising _A_ll and _-f_ ilter by `no.docker`.' 
    echo " " 
    echo More information is available at github.com/.x-pa 
    __lynslang_getver 
    __lyns_getver 
    __lynslang_status_fish 
    __lynslang_status_lyns 
end; funcsave __lynslang_status 
__lynslang_status