handle special-case program name '['

Author: BenWiederhake

complete/src/bash.rs

@@ -10,10 +10,14 @@ use crate::{Command, Flag};
 /// Also, pretend that files are fine in any position. ValueHints are ignored entirely.
 pub fn render(c: &Command) -> String {
     let mut out = String::new();
-    let name = &c.name;
+    // Be careful around the program '['!
+    let name_identifier = if c.name == "[" { &"bracket" } else { &c.name };
     // Register _comp_uu_FOO as a bash function that computes completions:
-    out.push_str(&format!("complete -F _comp_uu_{name} {name};"));
-    out.push_str(&format!("_comp_uu_{name}()"));
+    out.push_str(&format!(
+        "complete -F _comp_uu_{name_identifier} '{}';",
+        &c.name
+    ));
+    out.push_str(&format!("_comp_uu_{name_identifier}()"));
     // Unless the current argument starts with "-", pre-populate the completions list with all files and dirs:
     out.push_str("{ local cur;_init_completion||return;COMPREPLY=();if [[ \"$cur\" != \"-*\" ]]; then _filedir;fi;COMPREPLY+=($(compgen -W \"");
     for arg in &c.args {
@@ -59,6 +63,22 @@ mod test {
             ],
             ..Command::default()
         };
-        assert_eq!(render(&c), "complete -F _comp_uu_foo foo;_comp_uu_foo(){ local cur;_init_completion||return;COMPREPLY=();if [[ \"$cur\" != \"-*\" ]]; then _filedir;fi;COMPREPLY+=($(compgen -W \"-a --all -x \" -- \"$cur\"));}\n")
+        assert_eq!(render(&c), "complete -F _comp_uu_foo 'foo';_comp_uu_foo(){ local cur;_init_completion||return;COMPREPLY=();if [[ \"$cur\" != \"-*\" ]]; then _filedir;fi;COMPREPLY+=($(compgen -W \"-a --all -x \" -- \"$cur\"));}\n")
+    }
+
+    #[test]
+    fn bracket() {
+        let c = Command {
+            name: "[",
+            args: vec![Arg {
+                short: vec![Flag {
+                    flag: "x",
+                    value: Value::No,
+                }],
+                ..Arg::default()
+            }],
+            ..Command::default()
+        };
+        assert_eq!(render(&c), "complete -F _comp_uu_bracket '[';_comp_uu_bracket(){ local cur;_init_completion||return;COMPREPLY=();if [[ \"$cur\" != \"-*\" ]]; then _filedir;fi;COMPREPLY+=($(compgen -W \"-x \" -- \"$cur\"));}\n")
     }
 }