chore(complete): Add descriptions to dynamic Zsh completions

Author: vivienm

clap_complete/src/env/shells.rs

@@ -361,7 +361,7 @@ function _clap_dynamic_completer_NAME() {
     )}")
 
     if [[ -n $completions ]]; then
-        compadd -a completions
+        _describe 'values' completions
     fi
 }
 
@@ -398,8 +398,31 @@ compdef _clap_dynamic_completer_NAME BIN"#
             if i != 0 {
                 write!(buf, "{}", ifs.as_deref().unwrap_or("\n"))?;
             }
-            write!(buf, "{}", candidate.get_value().to_string_lossy())?;
+            write!(
+                buf,
+                "{}",
+                Self::escape_value(&candidate.get_value().to_string_lossy())
+            )?;
+            if let Some(help) = candidate.get_help() {
+                write!(
+                    buf,
+                    ":{}",
+                    Self::escape_help(help.to_string().lines().next().unwrap_or_default())
+                )?;
+            }
         }
         Ok(())
     }
 }
+
+impl Zsh {
+    /// Escape value string
+    fn escape_value(string: &str) -> String {
+        string.replace('\\', "\\\\").replace(':', "\\:")
+    }
+
+    /// Escape help string
+    fn escape_help(string: &str) -> String {
+        string.replace('\\', "\\\\")
+    }
+}

clap_complete/tests/snapshots/home/dynamic-env/exhaustive/zsh/zsh/_exhaustive

@@ -11,7 +11,7 @@ function _clap_dynamic_completer_exhaustive() {
     )}")
 
     if [[ -n $completions ]]; then
-        compadd -a completions
+        _describe 'values' completions
     fi
 }
 

clap_complete/tests/testsuite/zsh.rs

@@ -192,8 +192,12 @@ fn complete_dynamic_env_toplevel() {
     let input = "exhaustive \t\t";
     let expected = snapbox::str![[r#"
 % exhaustive
---generate  --help      action      help        last        quote       
---global    --version   alias       hint        pacman      value       
+--generate  -- generate
+--global    -- everywhere
+--help      -- Print help
+--version   -- Print version
+help        -- Print this message or the help of the given subcommand(s)
+action  alias   hint    last    pacman  quote   value
 "#]];
     let actual = runtime.complete(input, &term).unwrap();
     assert_data_eq!(actual, expected);
@@ -213,9 +217,18 @@ fn complete_dynamic_env_quoted_help() {
     let input = "exhaustive quote \t\t";
     let expected = snapbox::str![[r#"
 % exhaustive quote
---backslash        --choice           --global           --version          cmd-brackets       cmd-single-quotes
---backticks        --double-quotes    --help             cmd-backslash      cmd-double-quotes  escape-help
---brackets         --expansions       --single-quotes    cmd-backticks      cmd-expansions     help
+--global                            -- everywhere                                                                     
+--help                              -- Print help (see more with '--help')                                            
+--version                           -- Print version                                                                  
+cmd-backslash      --backslash      -- Avoid '/n'                                                                     
+cmd-backticks      --backticks      -- For more information see `echo test`                                           
+cmd-brackets       --brackets       -- List packages [filter]                                                         
+cmd-double-quotes  --double-quotes  -- Can be "always", "auto", or "never"                                            
+cmd-expansions     --expansions     -- Execute the shell command with $SHELL                                          
+cmd-single-quotes  --single-quotes  -- Can be 'always', 'auto', or 'never'                                            
+escape-help                         -- /tab/t"'                                                                       
+help                                -- Print this message or the help of the given subcommand(s)                      
+--choice
 "#]];
     let actual = runtime.complete(input, &term).unwrap();
     assert_data_eq!(actual, expected);
@@ -260,7 +273,10 @@ fn complete_dynamic_env_quoted_value() {
     let input = "exhaustive quote --choice \t\t";
     let expected = snapbox::str![[r#"
 % exhaustive quote --choice
-another/ shell  bash            fish            zsh
+another shell  -- something with a space
+bash           -- bash (shell)
+fish           -- fish shell
+zsh            -- zsh shell
 "#]];
     let actual = runtime.complete(input, &term).unwrap();
     assert_data_eq!(actual, expected);