test(complete): Add empty subcommand

clap_complete/examples/exhaustive.rs

@@ -32,6 +32,9 @@ fn cli() -> clap::Command {
             .value_parser(clap::value_parser!(Shell))
             .help("generate")])
         .subcommands([
+            clap::Command::new("empty")
+                .disable_help_subcommand(true)
+                .disable_help_flag(true),
             clap::Command::new("global")
                 .version("3.0")
                 .propagate_version(true)

clap_complete/tests/snapshots/home/static/exhaustive/bash/.bashrc

@@ -20,6 +20,9 @@ _exhaustive() {
             exhaustive,alias)
                 cmd="exhaustive__alias"
                 ;;
+            exhaustive,empty)
+                cmd="exhaustive__empty"
+                ;;
             exhaustive,global)
                 cmd="exhaustive__global"
                 ;;
@@ -80,6 +83,9 @@ _exhaustive() {
             exhaustive__help,alias)
                 cmd="exhaustive__help__alias"
                 ;;
+            exhaustive__help,empty)
+                cmd="exhaustive__help__empty"
+                ;;
             exhaustive__help,global)
                 cmd="exhaustive__help__global"
                 ;;
@@ -210,7 +216,7 @@ _exhaustive() {
 
     case "${cmd}" in
         exhaustive)
-            opts="-h --generate --help global action quote value pacman last alias hint help"
+            opts="-h --generate --help empty global action quote value pacman last alias hint help"
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 1 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -279,6 +285,20 @@ _exhaustive() {
             COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
             return 0
             ;;
+        exhaustive__empty)
+            opts=""
+            if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
+                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+                return 0
+            fi
+            case "${prev}" in
+                *)
+                    COMPREPLY=()
+                    ;;
+            esac
+            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+            return 0
+            ;;
         exhaustive__global)
             opts="-h -V --global --help --version one two help"
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
@@ -448,7 +468,7 @@ _exhaustive() {
             return 0
             ;;
         exhaustive__help)
-            opts="global action quote value pacman last alias hint help"
+            opts="empty global action quote value pacman last alias hint help"
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 2 ]] ; then
                 COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
                 return 0
@@ -489,6 +509,20 @@ _exhaustive() {
             COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
             return 0
             ;;
+        exhaustive__help__empty)
+            opts=""
+            if [[ ${cur} == -* || ${COMP_CWORD} -eq 3 ]] ; then
+                COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+                return 0
+            fi
+            case "${prev}" in
+                *)
+                    COMPREPLY=()
+                    ;;
+            esac
+            COMPREPLY=( $(compgen -W "${opts}" -- "${cur}") )
+            return 0
+            ;;
         exhaustive__help__global)
             opts="one two"
             if [[ ${cur} == -* || ${COMP_CWORD} -eq 3 ]] ; then

clap_complete/tests/snapshots/home/static/exhaustive/elvish/elvish/rc.elv

@@ -23,6 +23,7 @@ set edit:completion:arg-completer[exhaustive] = {|@words|
             cand --generate 'generate'
             cand -h 'Print help'
             cand --help 'Print help'
+            cand empty 'empty'
             cand global 'global'
             cand action 'action'
             cand quote 'quote'
@@ -33,6 +34,8 @@ set edit:completion:arg-completer[exhaustive] = {|@words|
             cand hint 'hint'
             cand help 'Print this message or the help of the given subcommand(s)'
         }
+        &'exhaustive;empty'= {
+        }
         &'exhaustive;global'= {
             cand --global 'everywhere'
             cand -h 'Print help'
@@ -243,6 +246,7 @@ set edit:completion:arg-completer[exhaustive] = {|@words|
             cand --help 'Print help'
         }
         &'exhaustive;help'= {
+            cand empty 'empty'
             cand global 'global'
             cand action 'action'
             cand quote 'quote'
@@ -253,6 +257,8 @@ set edit:completion:arg-completer[exhaustive] = {|@words|
             cand hint 'hint'
             cand help 'Print this message or the help of the given subcommand(s)'
         }
+        &'exhaustive;help;empty'= {
+        }
         &'exhaustive;help;global'= {
             cand one 'one'
             cand two 'two'

clap_complete/tests/snapshots/home/static/exhaustive/fish/fish/completions/exhaustive.fish

@@ -26,6 +26,7 @@ end
 
 complete -c exhaustive -n "__fish_exhaustive_needs_command" -l generate -d 'generate' -r -f -a "{bash\t'',elvish\t'',fish\t'',powershell\t'',zsh\t''}"
 complete -c exhaustive -n "__fish_exhaustive_needs_command" -s h -l help -d 'Print help'
+complete -c exhaustive -n "__fish_exhaustive_needs_command" -f -a "empty"
 complete -c exhaustive -n "__fish_exhaustive_needs_command" -f -a "global"
 complete -c exhaustive -n "__fish_exhaustive_needs_command" -f -a "action"
 complete -c exhaustive -n "__fish_exhaustive_needs_command" -f -a "quote"
@@ -119,15 +120,16 @@ complete -c exhaustive -n "__fish_exhaustive_using_subcommand hint" -s H -l host
 complete -c exhaustive -n "__fish_exhaustive_using_subcommand hint" -l url -r -f
 complete -c exhaustive -n "__fish_exhaustive_using_subcommand hint" -l email -r -f
 complete -c exhaustive -n "__fish_exhaustive_using_subcommand hint" -s h -l help -d 'Print help'
-complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from global action quote value pacman last alias hint help" -f -a "global"
-complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from global action quote value pacman last alias hint help" -f -a "action"
-complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from global action quote value pacman last alias hint help" -f -a "quote"
-complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from global action quote value pacman last alias hint help" -f -a "value"
-complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from global action quote value pacman last alias hint help" -f -a "pacman"
-complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from global action quote value pacman last alias hint help" -f -a "last"
-complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from global action quote value pacman last alias hint help" -f -a "alias"
-complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from global action quote value pacman last alias hint help" -f -a "hint"
-complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from global action quote value pacman last alias hint help" -f -a "help" -d 'Print this message or the help of the given subcommand(s)'
+complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from empty global action quote value pacman last alias hint help" -f -a "empty"
+complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from empty global action quote value pacman last alias hint help" -f -a "global"
+complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from empty global action quote value pacman last alias hint help" -f -a "action"
+complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from empty global action quote value pacman last alias hint help" -f -a "quote"
+complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from empty global action quote value pacman last alias hint help" -f -a "value"
+complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from empty global action quote value pacman last alias hint help" -f -a "pacman"
+complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from empty global action quote value pacman last alias hint help" -f -a "last"
+complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from empty global action quote value pacman last alias hint help" -f -a "alias"
+complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from empty global action quote value pacman last alias hint help" -f -a "hint"
+complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and not __fish_seen_subcommand_from empty global action quote value pacman last alias hint help" -f -a "help" -d 'Print this message or the help of the given subcommand(s)'
 complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and __fish_seen_subcommand_from global" -f -a "one"
 complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and __fish_seen_subcommand_from global" -f -a "two"
 complete -c exhaustive -n "__fish_exhaustive_using_subcommand help; and __fish_seen_subcommand_from quote" -f -a "cmd-single-quotes" -d 'Can be \'always\', \'auto\', or \'never\''

clap_complete/tests/snapshots/home/static/exhaustive/zsh/zsh/_exhaustive

@@ -27,7 +27,11 @@ _exhaustive() {
         (( CURRENT += 1 ))
         curcontext="${curcontext%:*:*}:exhaustive-command-$line[1]:"
         case $line[1] in
-            (global)
+            (empty)
+_arguments "${_arguments_options[@]}" : \
+&& ret=0
+;;
+(global)
 _arguments "${_arguments_options[@]}" : \
 '--global[everywhere]' \
 '-h[Print help]' \
@@ -413,7 +417,11 @@ _arguments "${_arguments_options[@]}" : \
         (( CURRENT += 1 ))
         curcontext="${curcontext%:*:*}:exhaustive-help-command-$line[1]:"
         case $line[1] in
-            (global)
+            (empty)
+_arguments "${_arguments_options[@]}" : \
+&& ret=0
+;;
+(global)
 _arguments "${_arguments_options[@]}" : \
 ":: :_exhaustive__help__global_commands" \
 "*::: :->global" \
@@ -557,6 +565,7 @@ esac
 (( $+functions[_exhaustive_commands] )) ||
 _exhaustive_commands() {
     local commands; commands=(
+'empty:' \
 'global:' \
 'action:' \
 'quote:' \
@@ -579,6 +588,11 @@ _exhaustive__alias_commands() {
     local commands; commands=()
     _describe -t commands 'exhaustive alias commands' commands "$@"
 }
+(( $+functions[_exhaustive__empty_commands] )) ||
+_exhaustive__empty_commands() {
+    local commands; commands=()
+    _describe -t commands 'exhaustive empty commands' commands "$@"
+}
 (( $+functions[_exhaustive__global_commands] )) ||
 _exhaustive__global_commands() {
     local commands; commands=(
@@ -658,6 +672,7 @@ _exhaustive__global__two_commands() {
 (( $+functions[_exhaustive__help_commands] )) ||
 _exhaustive__help_commands() {
     local commands; commands=(
+'empty:' \
 'global:' \
 'action:' \
 'quote:' \
@@ -680,6 +695,11 @@ _exhaustive__help__alias_commands() {
     local commands; commands=()
     _describe -t commands 'exhaustive help alias commands' commands "$@"
 }
+(( $+functions[_exhaustive__help__empty_commands] )) ||
+_exhaustive__help__empty_commands() {
+    local commands; commands=()
+    _describe -t commands 'exhaustive help empty commands' commands "$@"
+}
 (( $+functions[_exhaustive__help__global_commands] )) ||
 _exhaustive__help__global_commands() {
     local commands; commands=(

clap_complete/tests/testsuite/bash.rs

@@ -164,8 +164,8 @@ fn complete() {
     let input = "exhaustive \t\t";
     let expected = snapbox::str![[r#"
 % 
--h          --help      action      value       last        hint        
---generate  global      quote       pacman      alias       help        
+-h          --help      global      quote       pacman      alias       help        
+--generate  empty       action      value       last        hint        
 "#]];
     let actual = runtime.complete(input, &term).unwrap();
     assert_data_eq!(actual, expected);
@@ -260,8 +260,8 @@ fn complete_dynamic_env_toplevel() {
     let input = "exhaustive \t\t";
     let expected = snapbox::str![[r#"
 % 
+empty       action      value       last        hint        --generate  
 global      quote       pacman      alias       help        --help      
-action      value       last        hint        --generate  
 "#]];
     let actual = runtime.complete(input, &term).unwrap();
     assert_data_eq!(actual, expected);

clap_complete/tests/testsuite/elvish.rs

@@ -169,6 +169,7 @@ fn complete_static_toplevel() {
 -h             Print help                                               
 action         action                                                   
 alias          alias                                                    
+empty          empty                                                    
 global         global                                                   
 help           Print this message or the help of the given subcommand(s)
 hint           hint                                                     
@@ -203,8 +204,8 @@ fn complete_dynamic_env_toplevel() {
     let expected = snapbox::str![[r#"
 % exhaustive --generate
  COMPLETING argument  
---generate  action  global  hint  pacman  value
---help      alias   help    last  quote 
+--generate  action  empty   help  last    quote
+--help      alias   global  hint  pacman  value
 "#]];
     let actual = runtime.complete(input, &term).unwrap();
     assert_data_eq!(actual, expected);

clap_complete/tests/testsuite/fish.rs

@@ -163,8 +163,8 @@ fn complete() {
     let input = "exhaustive \t";
     let expected = snapbox::str![[r#"
 % exhaustive 
-action  global                                                             hint  pacman  value
-alias   help  (Print this message or the help of the given subcommand(s))  last  quote   
+action  empty   help  (Print this message or the help of the given subcommand(s))  last    quote
+alias   global  hint                                                               pacman  value
 "#]];
     let actual = runtime.complete(input, &term).unwrap();
     assert_data_eq!(actual, expected);
@@ -198,9 +198,9 @@ fn complete_dynamic_env_toplevel() {
 
     let input = "exhaustive \t\t";
     let expected = snapbox::str![[r#"
-% exhaustive global 
-global  quote  pacman  alias  help  (Print this message or the help of the given subcommand(s))  --help  (Print help)
-action  value  last    hint   --generate                                             (generate)  
+% exhaustive empty 
+empty   action  value   last   hint                                                               --generate  (generate)
+global  quote   pacman  alias  help  (Print this message or the help of the given subcommand(s))  --help    (Print help)
 "#]];
     let actual = runtime.complete(input, &term).unwrap();
     assert_data_eq!(actual, expected);

clap_complete/tests/testsuite/zsh.rs

@@ -164,8 +164,9 @@ fn complete() {
     let input = "exhaustive \t";
     let expected = snapbox::str![[r#"
 % exhaustive
-help                                                     -- Print this message or the help of the given subcommand(s) 
-pacman  action  global  alias  value  quote  hint  last  --                                                           
+help                                                      -- Print this message or the help of the given subcommand(s)
+hint                                                      
+pacman  action  global  alias  value  quote  empty  last  --                                                          
 "#]];
     let actual = runtime.complete(input, &term).unwrap();
     assert_data_eq!(actual, expected);
@@ -195,7 +196,7 @@ fn complete_dynamic_env_toplevel() {
 --generate  -- generate
 --help      -- Print help
 help        -- Print this message or the help of the given subcommand(s)
-action  alias   global  hint    last    pacman  quote   value
+action  alias   empty   global  hint    last    pacman  quote   value
 "#]];
     let actual = runtime.complete(input, &term).unwrap();
     assert_data_eq!(actual, expected);