fix: bash completion for values containing COMP_WORDBREAKS (#305)

Author: sigoden

src/compgen.rs

@@ -559,7 +559,11 @@ impl Shell {
         }
         match self {
             Shell::Bash => match std::env::var("COMP_WORDBREAKS") {
-                Ok(v) => v.chars().collect(),
+                Ok(v) => [':', '=', '@']
+                    .iter()
+                    .filter(|c| v.contains(**c))
+                    .copied()
+                    .collect(),
                 Err(_) => [':', '=', '@'].to_vec(),
             },
             Shell::Powershell => vec![','],

tests/compgen.rs

@@ -955,22 +955,23 @@ fn break_chars_bash() {
     let script = r#"
 # @arg args[`_choice_fn`]
 _choice_fn() {
-    echo abc:def
-    echo abc:ghi
-    echo abc=def
-    echo abc=ghi
-    echo abc@def
-    echo abc@ghi
-    echo abc,def
-    echo abc,ghi
+    echo "a1:b1"
+    echo "a1:b2"
+    echo "a1@b1"
+    echo "a1@b2"
+    echo "a1=b1"
+    echo "a1=b2"
+    echo "a1 b1"
+    echo "a1 b2"
 }
 "#;
     snapshot_compgen!(
         script,
         [
-            vec!["prog", "abc:"],
-            vec!["prog", "abc="],
-            vec!["prog", "abc@"],
+            vec!["prog", "a1:b"],
+            vec!["prog", "a1@b"],
+            vec!["prog", "a1=b"],
+            vec!["prog", "a1 b"],
         ],
         argc::Shell::Bash
     );

tests/snapshots/integration__compgen__break_chars_bash.snap

@@ -2,16 +2,20 @@
 source: tests/compgen.rs
 expression: data
 ---
-************ COMPGEN `prog abc:` ************
-def 
-ghi 
+************ COMPGEN `prog a1:b` ************
+b1 
+b2 
 
-************ COMPGEN `prog abc=` ************
-def 
-ghi 
+************ COMPGEN `prog a1@b` ************
+@b1 
+@b2 
 
-************ COMPGEN `prog abc@` ************
-@def 
-@ghi 
+************ COMPGEN `prog a1=b` ************
+b1 
+b2 
+
+************ COMPGEN `prog a1 b` ************
+a1\ b1 
+a1\ b2