fix(status): Make status module work even when the status is 0 (#3750)

Co-authored-by: Izhak Jakov <jizhak@ca.ibm.com>

docs/config/README.md

@@ -3083,7 +3083,7 @@ format = '[📦 \[$env\]]($style) '
 ## Status
 
 The `status` module displays the exit code of the previous command.
-The module will be shown only if the exit code is not `0`.
+If $success_symbol is empty (default), the module will be shown only if the exit code is not `0`.
 The status code will cast to a signed 32-bit integer.
 
 ::: tip
@@ -3103,7 +3103,7 @@ This module is not supported on nu shell.
 | ----------------------- | ----------------------------------------------------------------------------- | ------------------------------------------------------- |
 | `format`                | `"[$symbol$status]($style) "`                                                 | The format of the module                                |
 | `symbol`                | `"✖"`                                                                         | The symbol displayed on program error                   |
-| `success_symbol`        | `"✔️"`                                                                        | The symbol displayed on program success                 |
+| `success_symbol`        | `""`                                                                          | The symbol displayed on program success                 |
 | `not_executable_symbol` | `"🚫"`                                                                         | The symbol displayed when file isn't executable         |
 | `not_found_symbol`      | `"🔍"`                                                                         | The symbol displayed when the command can't be found    |
 | `sigint_symbol`         | `"🧱"`                                                                         | The symbol displayed on SIGINT (Ctrl + c)               |
@@ -3140,8 +3140,9 @@ This module is not supported on nu shell.
 
 [status]
 style = "bg:blue"
-symbol = "🔴"
+symbol = "🔴 "
-format = '[\[$symbol $common_meaning$signal_name$maybe_int\]]($style) '
+success_symbol = "🟢 SUCCESS"
+format = '[\[$symbol$common_meaning$signal_name$maybe_int\]]($style) '
 map_symbol = true
 disabled = false
 ```

src/configs/status.rs

@@ -26,7 +26,7 @@ impl<'a> Default for StatusConfig<'a> {
         StatusConfig {
             format: "[$symbol$status]($style) ",
             symbol: "✖",
-            success_symbol: "✔️",
+            success_symbol: "",
             not_executable_symbol: "🚫",
             not_found_symbol: "🔍",
             sigint_symbol: "🧱",

src/modules/status.rs

@@ -17,7 +17,7 @@ enum PipeStatusStatus<'a> {
 
 /// Creates a module with the status of the last command
 ///
-/// Will display the status only if it is not 0
+/// Will display the status
 pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
     let mut module = context.new_module("status");
     let config = StatusConfig::try_load(module.config);
@@ -43,8 +43,9 @@ pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
         false => PipeStatusStatus::Disabled,
     };
 
-    // Exit code is zero and pipestatus is all zero or disabled/missing
+    // Exit code is zero while success_symbol and pipestatus are all zero or disabled/missing
     if exit_code == "0"
+        && config.success_symbol.is_empty()
         && (match pipestatus_status {
             PipeStatusStatus::Pipe(ps) => ps.iter().all(|s| s == "0"),
             _ => true,
@@ -176,7 +177,7 @@ fn status_common_meaning(ex: ExitCode) -> Option<&'static str> {
         return None;
     }
     match ex {
-        0 => Some(""),
+        0 => Some(""), // SUCCESS can be defined by $success_symbol if the user wishes too.
         1 => Some("ERROR"),
         2 => Some("USAGE"),
         126 => Some("NOPERM"),
@@ -228,13 +229,59 @@ mod tests {
     use crate::test::ModuleRenderer;
 
     #[test]
-    fn success_status() {
+    fn success_status_success_symbol_empty() {
         let expected = None;
 
+        // Status code 0 and success_symbol = ""
+        let actual = ModuleRenderer::new("status")
+            .config(toml::toml! {
+                [status]
+                success_symbol = ""
+                disabled = false
+            })
+            .status(0)
+            .collect();
+        assert_eq!(expected, actual);
+
+        // Status code 0 and success_symbol is missing
+        let actual = ModuleRenderer::new("status")
+            .config(toml::toml! {
+                [status]
+                disabled = false
+            })
+            .status(0)
+            .collect();
+        assert_eq!(expected, actual);
+
+        // No status code and success_symbol = ""
+        let actual = ModuleRenderer::new("status")
+            .config(toml::toml! {
+                [status]
+                success_symbol = ""
+                disabled = false
+            })
+            .collect();
+        assert_eq!(expected, actual);
+
+        // No status code and success_symbol is missing
+        let actual = ModuleRenderer::new("status")
+            .config(toml::toml! {
+                [status]
+                disabled = false
+            })
+            .collect();
+        assert_eq!(expected, actual);
+    }
+
+    #[test]
+    fn success_status_success_symbol_filled() {
+        let expected = Some(format!("{} ", Color::Red.bold().paint("✔️0")));
+
         // Status code 0
         let actual = ModuleRenderer::new("status")
             .config(toml::toml! {
                 [status]
+                success_symbol = "✔️"
                 disabled = false
             })
             .status(0)
@@ -245,6 +292,7 @@ mod tests {
         let actual = ModuleRenderer::new("status")
             .config(toml::toml! {
                 [status]
+                success_symbol = "✔️"
                 disabled = false
             })
             .collect();