Use --show-current for the git branch element

The --show-current option has been introduced in git 2.22.0.
https://www.git-scm.com/docs/git-branch#Documentation/git-branch.txt---show-current

Author: Scriptim

src/lib/enum/promptElementType.ts

@@ -219,16 +219,7 @@ export const PROMPT_ELEMENT_TYPES = [
   new PromptElementType('Jobs', '\\j', [], true, false, 'The number of jobs currently managed by the shell.', '2'),
   new PromptElementType('Prompt Sign', '\\$', [], true, false, 'If the effective uid is 0, #, otherwise $.', '$'),
   new PromptElementType('Exit Status', '$?', [], true, false, 'Exit status ($?).', '0'),
-  new PromptElementType(
-    'Git Branch',
-    // eslint-disable-next-line quotes
-    "git branch 2>/dev/null | grep '*' | colrm 1 2",
-    [],
-    true,
-    true,
-    'Git branch.',
-    'master',
-  ),
+  new PromptElementType('Git Branch', 'git branch --show-current 2>/dev/null', [], true, true, 'Git branch.', 'master'),
   new PromptElementType(
     'Advanced Git Prompt',
     (args) => `__git_ps1 "${args.format ?? ''}"`,

src/lib/promptParser.ts

@@ -313,7 +313,12 @@ function applyPromptCommand(ps1: PromptElement[], promptCommand: string): Prompt
     }
 
     // use the predefined command elements (e. g. 'Git branch') if possible
-    const predefinedCommand = PROMPT_ELEMENT_TYPES.find((e) => e.command && e.char({}) === command);
+    let predefinedCommand = PROMPT_ELEMENT_TYPES.find((e) => e.command && e.char({}) === command);
+    // backwards compatibility for the git branch command (replaces the old command with the new one)
+    // eslint-disable-next-line quotes
+    if (command === "git branch 2>/dev/null | grep '*' | colrm 1 2") {
+      predefinedCommand = getPromptElementTypeByNameUnsafe('Git Branch');
+    }
     let newElement: PromptElement;
     if (predefinedCommand !== undefined) {
       newElement = new PromptElement(predefinedCommand);