Fix double asterisk formatting in JSDoc

Author: armanio123

src/compiler/parser.ts

@@ -7602,8 +7602,15 @@ namespace ts {
                                 if (state === JSDocState.BeginningOfLine) {
                                     // leading asterisks start recording on the *next* (non-whitespace) token
                                     state = JSDocState.SawAsterisk;
-                                    indent += 1;
-                                    break;
+
+                                    if (lookAhead(() => nextTokenJSDoc() === SyntaxKind.AsteriskToken)) {
+                                        pushComment(scanner.getTokenText());
+                                        tok = nextTokenJSDoc();
+                                    }
+                                    else {
+                                        indent += 1;
+                                        break;
+                                    }
                                 }
                                 // record the * as a comment
                                 // falls through

tests/cases/fourslash/quickInfoJsDocTextFormatting1.ts

@@ -0,0 +1,101 @@
+/// <reference path='fourslash.ts'/>
+
+// Regression test for #33386
+
+//// /**
+////  * @param {number} var1 **Highlighted text**
+////  * @param {string} var2 Another **Highlighted text**
+//// */
+//// function f1(var1, var2) { }
+//// 
+//// /**
+////  * @param {number} var1 *This asterisk gets trimmed unfortunatelly
+////  * @param {string} var2 Another *Regular text with an asterisk
+//// */
+//// function f2(var1, var2) { }
+//// 
+//// /**
+////  * @param {number} var1 
+////  * *Regular text with an asterisk
+////  * @param {string} var2 
+////  * Another *Regular text with an asterisk
+//// */
+//// function f3(var1, var2) { }
+//// 
+//// /**
+////  * @param {number} var1 
+////  * **Highlighted text**
+////  * @param {string} var2 
+////  * Another **Highlighted text**
+//// */
+//// function f4(var1, var2) { }
+//// 
+//// /**
+////  * @param {number} var1 
+////    **Highlighted text**
+////  * @param {string} var2 
+////    Another **Highlighted text**
+//// */
+//// function f5(var1, var2) { }
+//// 
+//// f1(/*1*/);
+//// f2(/*2*/);
+//// f3(/*3*/);
+//// f4(/*4*/);
+//// f5(/*5*/);
+
+verify.signatureHelp({
+    marker: "1",
+    parameterDocComment: "**Highlighted text**",
+    tags: [{
+        name: "param",
+        text: "var1 **Highlighted text**"
+    }, {
+        name: "param",
+        text: "var2 Another **Highlighted text**"
+    }]
+});
+verify.signatureHelp({
+    marker: "2",
+    parameterDocComment: "This asterisk gets trimmed unfortunatelly",
+    tags: [{
+        name: "param",
+        text: "var1 This asterisk gets trimmed unfortunatelly"
+    }, {
+        name: "param",
+        text: "var2 Another *Regular text with an asterisk"
+    }]
+});
+verify.signatureHelp({
+    marker: "3",
+    parameterDocComment: "*Regular text with an asterisk",
+    tags: [{
+        name: "param",
+        text: "var1 *Regular text with an asterisk"
+    }, {
+        name: "param",
+        text: "var2 Another *Regular text with an asterisk"
+    }]
+});
+verify.signatureHelp({
+    marker: "4",
+    parameterDocComment: "**Highlighted text**",
+    tags: [{
+        name: "param",
+        text: "var1 **Highlighted text**"
+    }, {
+        name: "param",
+        text: "var2 Another **Highlighted text**"
+    }]
+});
+verify.signatureHelp({
+    marker: "5",
+    parameterDocComment: "**Highlighted text**",
+    tags: [{
+        name: "param",
+        text: "var1 **Highlighted text**"
+    }, {
+        name: "param",
+        text: "var2 Another **Highlighted text**"
+    }]
+});