Replace use of $nothing with null (#621)

`$nothing` will be deprecated in nu 0.86

This accompanies
- https://github.com/nushell/nushell/pull/10478

benchmarks/gradient-autoview.nu

@@ -16,5 +16,5 @@ seq 0 $height | par-each {|| # create these in parallel
         }
     } | str join)
     print -n $"($row_data)" | table
-    $nothing
+    null
 } | compact

custom-completions/auto-generate/parse-fish.nu

@@ -27,7 +27,7 @@ def parse-fish [] {
         | flatten                                 # merge them all into a top level label
     )
     # default every column in the table to "" to make processing easier
-    # some values having $nothing often breaks nu or requires lots of checking
+    # some values having null often breaks nu or requires lots of checking
     $data | columns | reduce -f $data { |c, acc|
         $acc | default "" $c
     }

custom-completions/winget/winget-completions.nu

@@ -374,7 +374,7 @@ def "nu-complete winget source type" [] {
 
 def "nu-complete winget flagify" [name: string, value: any, --short(-s): bool] {
   let flag_start = if $short { '-' } else { '--' }
-  if $value == $nothing or $value == false {
+  if $value == null or $value == false {
     ""
   } else if $value == true {
     $"($flag_start)($name)"

hooks/direnv/direnv.nu

@@ -23,7 +23,7 @@ export-env {
     $env.config = ( $env.config | upsert hooks.env_change.PWD { |config|
         let o = ($config | get -i hooks.env_change.PWD)
         let val = (direnv)
-        if $o == $nothing {
+        if $o == null {
             $val
         } else {
             $o | append $val

hooks/dynamic-load/dynamic-load.nu

@@ -11,7 +11,7 @@ export-env {
     $env.config = ( $env.config | upsert hooks.env_change.PWD { |config|
         let o = ($config | get -i hooks.env_change.PWD)
         let val = (dynamic_load)
-        if $o == $nothing {
+        if $o == null {
             $val
         } else {
             $o | append $val

hooks/filesystem/autojump.nu

@@ -21,7 +21,7 @@ def-env j [dir] {
 $env.config = ($env.config | upsert hooks.env_change.PWD {|config|
     let val = ($config | get -i hooks.env_change.PWD)
 
-    if $val == $nothing {
+    if $val == null {
         $val | append {|before, after| autojump_add_to_database $after }
     } else {
         [

make_release/gen-js-ext.nu

@@ -55,7 +55,7 @@ def gen_keywords_alphabetically [] {
             if ($cmd | str starts-with $alpha) {
                 $cmd
             } else {
-                $nothing
+                null
             }
         } | str join '|')
         if ($letter_cmds | str trim | str length) > 0 {
@@ -87,7 +87,7 @@ def gen_sub_keywords_alphabetically [] {
                 let parts = ($cmd | split row ' ')
                 $'($parts.0)\\s($parts.1)'
             } else {
-                $nothing
+                null
             }
         } | str join '|')
         if ($letter_cmds | str trim | str length) > 0 {

modules/nvim/nvim.nu

@@ -43,7 +43,7 @@ export-env {
     $env.config = ( $env.config | upsert hooks.env_change.PWD { |config|
         let o = ($config | get -i hooks.env_change.PWD)
         let val = (nvim_tcd)
-        if $o == $nothing {
+        if $o == null {
             $val
         } else {
             $o | append $val

modules/prompt/async_git_prompt/prompt.nu

@@ -23,7 +23,7 @@ def prompt-create-left-prompt [] {
 }
 
 def prompt-create-right-prompt [] {
-    $nothing
+    null
 }
 
 $env.PROMPT_COMMAND = { prompt-create-left-prompt }

modules/prompt/oh-my-minimal.nu

@@ -260,7 +260,7 @@ export def get_right_prompt [os use_nerd_fonts] {
 }
 
 export def get_prompt [nerd?] {
-    let use_nerd_fonts = ($nerd != $nothing)
+    let use_nerd_fonts = ($nerd != null)
     let os = ((sys).host.name)
     let left_prompt = (get_left_prompt $os $use_nerd_fonts)
     let right_prompt = (get_right_prompt $os $use_nerd_fonts)

modules/prompt/oh-my-v2.nu

@@ -168,12 +168,12 @@ let runtime_colors = [
     { name: prompt_color_separator_same_color, '8bit': $prompt_color_separator_same_color_8, '24bit': $prompt_color_separator_same_color_24 },
     { name: left_separator_diff_color, '8bit': $left_prompt_separator_diff_color, '24bit': $left_prompt_separator_diff_color },
     { name: left_separator_same_color, '8bit': $left_prompt_separator_same_color, '24bit': $left_prompt_separator_same_color },
-    { name: left_prefix, value: $nothing },
+    { name: left_prefix, value: null },
-    { name: left_suffix, value: $nothing },
+    { name: left_suffix, value: null },
     { name: right_separator_diff_color, '8bit': $right_prompt_separator_diff_color, '24bit': $right_prompt_separator_diff_color },
     { name: right_separator_same_color, '8bit': $right_prompt_separator_same_color, '24bit': $right_prompt_separator_same_color },
-    { name: right_prefix, value: $nothing },
+    { name: right_prefix, value: null },
-    { name: right_suffix, value: $nothing },
+    { name: right_suffix, value: null },
 
     { name: cmd_bg_color, '8bit': $cmd_duration_bg_color_8, '24bit': $cmd_duration_bg_color_24 },
     { name: cmd_color, '8bit': $cmd_duration_color_8, '24bit': $cmd_duration_color_24 },
@@ -199,9 +199,9 @@ let runtime_colors = [
     { name: pwd_color_anchors, '8bit': $pwd_color_anchors_8, '24bit': $pwd_color_anchors_24 },
     { name: pwd_color_dirs, '8bit': $pwd_color_dirs_8, '24bit': $pwd_color_dirs_24 },
     { name: pwd_color_truncated_dirs, '8bit': $pwd_color_truncated_dirs_8, '24bit': $pwd_color_truncated_dirs_24 },
-    { name: pwd_icon, value: $nothing },
+    { name: pwd_icon, value: null },
-    { name: pwd_icon_home, value: $nothing },
+    { name: pwd_icon_home, value: null },
-    { name: pwd_icon_unwritable, value: $nothing },
+    { name: pwd_icon_unwritable, value: null },
 
     { name: rustc_bg_color, '8bit': $rustc_bg_color_8, '24bit': $rustc_bg_color_24 },
     { name: rustc_color, '8bit': $rustc_color_8, '24bit': $rustc_color_24 },
@@ -211,12 +211,12 @@ let runtime_colors = [
     { name: status_bg_color_failure, '8bit': $status_bg_color_failure_8, '24bit': $status_bg_color_failure_24 },
     { name: status_color, '8bit': $status_color_8, '24bit': $status_color_24 },
     { name: status_color_failure, '8bit': $status_color_failure_8 , '24bit': $status_color_failure_24 },
-    { name: status_icon, value: $nothing },
+    { name: status_icon, value: null },
-    { name: status_icon_failure, value: $nothing },
+    { name: status_icon_failure, value: null },
 
     { name: time_bg_color, '8bit': $time_bg_color_8, '24bit': $time_bg_color_24 },
     { name: time_color, '8bit': $time_color_8, '24bit': $time_color_24 },
-    { name: time_format, value: $nothing },
+    { name: time_format, value: null },
 
     { name: indicator_bg_color, '8bit': $indicator_bg_color_8, '24bit': $indicator_bg_color_24 },
     { name: indicator_color, '8bit': $indicator_color_8, '24bit': $indicator_color_24 },

modules/prompt/powerline/README.md

@@ -12,7 +12,7 @@ use power.nu
     }
     use power_utils.nu
     power inject 0 1 {source: atuin, color: '#4C4B4A'}
-    power set time $nothing { short: false }
+    power set time null { short: false }
 power init
 ```
 or
@@ -60,7 +60,7 @@ power analyze
 ```
 
 ## todo
-- [x] source return `$nothing` for hiding
+- [x] source return `null` for hiding
 - [ ] in fast mode, there is still a problem with hideable components on the left
 - [x] proxy stat invalid in plain mode
     - '<<' not longer hide separator in `fast` mode

modules/prompt/powerline/power.nu

@@ -55,7 +55,7 @@ export def proxy_stat [] {
         if not (($env.https_proxy? | is-empty) and ($env.http_proxy? | is-empty)) {
             [$bg '']
         } else {
-            [$bg $nothing]
+            [$bg null]
         }
     }
 }
@@ -192,7 +192,7 @@ def left_prompt [segment] {
         let segment = ($segment
             | reduce -f [] {|x, acc|
                 let y = (do $x.1 $x.0)
-                if $y.1 == $nothing {
+                if $y.1 == null {
                     $acc
                 } else {
                     $acc | append [$y]
@@ -226,7 +226,7 @@ def right_prompt [segment] {
         $segment
         | reduce -f [] {|x,acc|
             let y = (do $x.1 $x.0)
-            if $y.1 == $nothing {
+            if $y.1 == null {
                 $acc
             } else {
                 $acc | append [$y]
@@ -292,8 +292,8 @@ def decorator_gen [
 def squash [thunk] {
     mut r = ""
     for t in $thunk {
-        let v = (do $t.0 $nothing)
+        let v = (do $t.0 null)
-        if ($v.1 != $nothing) {
+        if ($v.1 != null) {
             $r += (do $t.1 $v.1)
         }
     }
@@ -342,8 +342,8 @@ def up_prompt [segment] {
             | each {|y|
                 $y
                 | reduce -f [] {|x, acc|
-                    let y = (do $x $nothing)
+                    let y = (do $x null)
-                    if $y.1 == $nothing {
+                    if $y.1 == null {
                         $acc
                     } else {
                         $acc | append $y.1

modules/prompt/powerline/power_kube.nu

@@ -20,7 +20,7 @@ def "kube ctx" [] {
         $cache = $"($env.HOME)/.cache/nu-power/kube-($env.KUBECONFIG | str replace -a '/' ':').json"
         $file = $env.KUBECONFIG
     }
-    if not ($file | path exists) { return $nothing }
+    if not ($file | path exists) { return null }
     ensure-cache $cache $file {
         do -i {
             kubectl config get-contexts

modules/virtual_environments/auto-venv/auto-venv.nu

@@ -19,7 +19,7 @@ export-env {
 
 
 def default-hooks [] {
-    (if ($env.config.hooks.env_change.PWD != $nothing) {
+    (if ($env.config.hooks.env_change.PWD != null) {
         [$env.config.hooks.env_change.PWD]
     }
     else {

modules/virtual_environments/auto-venv/path_extensions.nu

@@ -29,7 +29,7 @@ export def "path check-sub" [
 
     (ls -a $folder
         | where ( 
-            ($type == $nothing or $it.type in $type)
+            ($type == null or $it.type in $type)
             and ($it.name | path basename) == $subfolder
         )
         | length 
@@ -53,7 +53,7 @@ export def "path find-sub" [
         )
     );
 
-    if ($paths != $nothing) and ($paths | length) > 0 {
+    if ($paths != null) and ($paths | length) > 0 {
         [ ($paths | first), $subfolder ] | path join
     } else {[]}
 }

modules/virtual_environments/conda.nu

@@ -65,7 +65,7 @@ export def-env activate [
             PROMPT_COMMAND: $new_prompt
         }
     } else {
-        $new_env | merge { CONDA_OLD_PROMPT_COMMAND: $nothing }
+        $new_env | merge { CONDA_OLD_PROMPT_COMMAND: null }
     }
 
 
@@ -84,7 +84,7 @@ export def-env deactivate [] {
     hide-env CONDA_OLD_PATH
 
     $env.PROMPT_COMMAND = (
-        if $env.CONDA_OLD_PROMPT_COMMAND == $nothing {
+        if $env.CONDA_OLD_PROMPT_COMMAND == null {
             $env.PROMPT_COMMAND
         } else {
             $env.CONDA_OLD_PROMPT_COMMAND

modules/weather/get-weather.nu

@@ -167,8 +167,8 @@ export def get_weather [
     ] {
     let token = "85a4e3c55b73909f42c6a23ec35b7147"
 
-    let is_loc_empty = ($locIdx == $nothing)
+    let is_loc_empty = ($locIdx == null)
-    let is_units_empty = ($units == $nothing)
+    let is_units_empty = ($units == null)
 
     let no_loc_no_unit = ($is_loc_empty == true and $is_units_empty == true)
     let no_loc_with_unit = ($is_loc_empty == true and $is_units_empty == false)

sourced/nu_101/flag.nu

@@ -39,8 +39,8 @@ def get_flag [
     --test_int(-i): int # The test intlocation
     --test_string(-s): string # The test string
     ] {
-    let is_int_empty = ($test_int == $nothing)
+    let is_int_empty = ($test_int == null)
-    let is_string_empty = ($test_string == $nothing)
+    let is_string_empty = ($test_string == null)
 
     let no_int_no_string = ($is_int_empty == true and $is_string_empty == true)
     let no_int_with_string = ($is_int_empty == true and $is_string_empty == false)