From b166995d5d6aff55cb71e78a1ed8a33f0f9301db Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 20 Mar 2026 21:28:25 +0000
Subject: [PATCH 1/6] fix: add preventAutoclose to ProblemCollector, inject
 strip-colors transform, make line/column optional in patterns, always wire
 problemCollector

Co-authored-by: dmichon-msft <26827560+dmichon-msft@users.noreply.github.com>
Agent-Logs-Url: https://github.com/microsoft/rushstack/sessions/d3363f24-2939-4850-85fb-b8b3eafa7a1e
---
 libraries/node-core-library/src/FileError.ts  |  4 ++--
 .../operations/OperationExecutionRecord.ts    | 21 +++++++++++++------
 2 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/libraries/node-core-library/src/FileError.ts b/libraries/node-core-library/src/FileError.ts
index 32fac1b5742..0e07ecf3719 100644
--- a/libraries/node-core-library/src/FileError.ts
+++ b/libraries/node-core-library/src/FileError.ts
@@ -50,7 +50,7 @@ const uuidFileError: string = '37a4c772-2dc8-4c66-89ae-262f8cc1f0c1';
 const baseFolderEnvVar: string = 'RUSHSTACK_FILE_ERROR_BASE_FOLDER';
 
 const unixProblemMatcherPattern: IProblemPattern = {
-  regexp: '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^:]+):(\\d+):(\\d+)\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
+  regexp: '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^:\\s]+)(?::(\\d+)(?::(\\d+))?)?\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
   severity: 1,
   file: 2,
   line: 3,
@@ -61,7 +61,7 @@ const unixProblemMatcherPattern: IProblemPattern = {
 
 const vsProblemMatcherPattern: IProblemPattern = {
   regexp:
-    '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^\\(]+)\\((\\d+),(\\d+)\\)\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
+    '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^\\(\\s]+)(?:\\((\\d+)(?:,(\\d+))?\\))?\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
   severity: 1,
   file: 2,
   line: 3,
diff --git a/libraries/rush-lib/src/logic/operations/OperationExecutionRecord.ts b/libraries/rush-lib/src/logic/operations/OperationExecutionRecord.ts
index 63da9421b54..301690ff933 100644
--- a/libraries/rush-lib/src/logic/operations/OperationExecutionRecord.ts
+++ b/libraries/rush-lib/src/logic/operations/OperationExecutionRecord.ts
@@ -114,6 +114,8 @@ export class OperationExecutionRecord implements IOperationRunnerContext, IOpera
     preventAutoclose: true
   });
   public readonly problemCollector: ProblemCollector = new ProblemCollector({
+    // Allow writing to this object after transforms have been closed. We clean it up manually in a finally block.
+    preventAutoclose: true,
     matcherJson: [
       {
         name: 'rushstack-file-error-unix',
@@ -322,14 +324,21 @@ export class OperationExecutionRecord implements IOperationRunnerContext, IOpera
       //
       //                             +--> quietModeTransform? --> collatedWriter
       //                             |
-      // normalizeNewlineTransform --1--> stderrLineTransform --2--> projectLogWritable
+      // normalizeNewlineTransform --1--> stderrLineTransform --2--> projectLogWritable?
       //                                                        |
       //                                                        +--> stdioSummarizer
-      const destination: TerminalWritable = projectLogWritable
-        ? new SplitterTransform({
-            destinations: [projectLogWritable, stdioSummarizer, problemCollector]
-          })
-        : stdioSummarizer;
+      //                                                        |
+      //                                                        +--> removeColorsTransform --> problemCollector
+      const removeColorsTransform: TextRewriterTransform = new TextRewriterTransform({
+        destination: problemCollector,
+        removeColors: true
+      });
+
+      const destination: TerminalWritable = new SplitterTransform({
+        destinations: projectLogWritable
+          ? [projectLogWritable, stdioSummarizer, removeColorsTransform]
+          : [stdioSummarizer, removeColorsTransform]
+      });
 
       const stderrLineTransform: StderrLineTransform = new StderrLineTransform({
         destination,

From 99ad6759db4e5ab92f41ea0080719bbfdd41df35 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 20 Mar 2026 21:32:47 +0000
Subject: [PATCH 2/6] fix: use non-greedy matching in FileError problem matcher
 patterns to handle paths with spaces

Co-authored-by: dmichon-msft <26827560+dmichon-msft@users.noreply.github.com>
Agent-Logs-Url: https://github.com/microsoft/rushstack/sessions/d3363f24-2939-4850-85fb-b8b3eafa7a1e
---
 libraries/node-core-library/src/FileError.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libraries/node-core-library/src/FileError.ts b/libraries/node-core-library/src/FileError.ts
index 0e07ecf3719..ae64da24858 100644
--- a/libraries/node-core-library/src/FileError.ts
+++ b/libraries/node-core-library/src/FileError.ts
@@ -50,7 +50,7 @@ const uuidFileError: string = '37a4c772-2dc8-4c66-89ae-262f8cc1f0c1';
 const baseFolderEnvVar: string = 'RUSHSTACK_FILE_ERROR_BASE_FOLDER';
 
 const unixProblemMatcherPattern: IProblemPattern = {
-  regexp: '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^:\\s]+)(?::(\\d+)(?::(\\d+))?)?\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
+  regexp: '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^:]+?)(?::(\\d+)(?::(\\d+))?)?\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
   severity: 1,
   file: 2,
   line: 3,
@@ -61,7 +61,7 @@ const unixProblemMatcherPattern: IProblemPattern = {
 
 const vsProblemMatcherPattern: IProblemPattern = {
   regexp:
-    '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^\\(\\s]+)(?:\\((\\d+)(?:,(\\d+))?\\))?\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
+    '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^\\(]+?)(?:\\((\\d+)(?:,(\\d+))?\\))?\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
   severity: 1,
   file: 2,
   line: 3,

From 3fe471a27a095182623e310f524e9548b6036041 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 20 Mar 2026 21:40:10 +0000
Subject: [PATCH 3/6] fix: default line and column to 1 in
 FileError.getFormattedErrorMessage; revert optional regex groups

Co-authored-by: dmichon-msft <26827560+dmichon-msft@users.noreply.github.com>
Agent-Logs-Url: https://github.com/microsoft/rushstack/sessions/191532d8-1356-4937-9fe4-bddc8b3fdcaf
---
 libraries/node-core-library/src/FileError.ts  |  8 ++--
 .../src/test/FileError.test.ts                | 38 +++++++++----------
 2 files changed, 23 insertions(+), 23 deletions(-)

diff --git a/libraries/node-core-library/src/FileError.ts b/libraries/node-core-library/src/FileError.ts
index ae64da24858..7857bc8b036 100644
--- a/libraries/node-core-library/src/FileError.ts
+++ b/libraries/node-core-library/src/FileError.ts
@@ -50,7 +50,7 @@ const uuidFileError: string = '37a4c772-2dc8-4c66-89ae-262f8cc1f0c1';
 const baseFolderEnvVar: string = 'RUSHSTACK_FILE_ERROR_BASE_FOLDER';
 
 const unixProblemMatcherPattern: IProblemPattern = {
-  regexp: '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^:]+?)(?::(\\d+)(?::(\\d+))?)?\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
+  regexp: '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^:]+):(\\d+):(\\d+)\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
   severity: 1,
   file: 2,
   line: 3,
@@ -61,7 +61,7 @@ const unixProblemMatcherPattern: IProblemPattern = {
 
 const vsProblemMatcherPattern: IProblemPattern = {
   regexp:
-    '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^\\(]+?)(?:\\((\\d+)(?:,(\\d+))?\\))?\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
+    '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^\\(]+)\\((\\d+),(\\d+)\\)\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
   severity: 1,
   file: 2,
   line: 3,
@@ -145,8 +145,8 @@ export class FileError extends Error {
       baseFolder: this._evaluateBaseFolder(),
       pathToFormat: this.absolutePath,
       message: this.message,
-      line: this.line,
-      column: this.column
+      line: this.line ?? 1,
+      column: this.column ?? 1
     });
   }
 
diff --git a/libraries/node-core-library/src/test/FileError.test.ts b/libraries/node-core-library/src/test/FileError.test.ts
index 03887d624fd..9daee44a6b5 100644
--- a/libraries/node-core-library/src/test/FileError.test.ts
+++ b/libraries/node-core-library/src/test/FileError.test.ts
@@ -29,7 +29,7 @@ describe(FileError.name, () => {
       absolutePath: `/path/to/project/path/to/file`,
       projectFolder: '/path/to/project'
     });
-    expect(error1.toString()).toMatchInlineSnapshot(`"path/to/file - message"`);
+    expect(error1.toString()).toMatchInlineSnapshot(`"path/to/file:1:1 - message"`);
   });
 
   it('correctly performs Unix-style relative file path formatting', () => {
@@ -49,7 +49,7 @@ describe(FileError.name, () => {
       line: 5
     });
     expect(error2.getFormattedErrorMessage({ format: 'Unix' })).toMatchInlineSnapshot(
-      `"path/to/file:5 - message"`
+      `"path/to/file:5:1 - message"`
     );
 
     const error3: FileError = new FileError('message', {
@@ -59,7 +59,7 @@ describe(FileError.name, () => {
       column: 12
     });
     expect(error3.getFormattedErrorMessage({ format: 'Unix' })).toMatchInlineSnapshot(
-      `"path/to/file - message"`
+      `"path/to/file:1:1 - message"`
     );
 
     const error4: FileError = new FileError('message', {
@@ -67,7 +67,7 @@ describe(FileError.name, () => {
       projectFolder: '/path/to/project'
     });
     expect(error4.getFormattedErrorMessage({ format: 'Unix' })).toMatchInlineSnapshot(
-      `"path/to/file - message"`
+      `"path/to/file:1:1 - message"`
     );
   });
 
@@ -93,8 +93,8 @@ describe(FileError.name, () => {
     // Because the file path is resolved on disk, the output will vary based on platform.
     // Only check that it ends as expected and is an absolute path.
     const error2Message: string = error2.getFormattedErrorMessage({ format: 'Unix' });
-    expect(error2Message).toMatch(/.+:5 - message$/);
-    const error2Path: string = error2Message.slice(0, error2Message.length - ':5 - message'.length);
+    expect(error2Message).toMatch(/.+:5:1 - message$/);
+    const error2Path: string = error2Message.slice(0, error2Message.length - ':5:1 - message'.length);
     expect(path.isAbsolute(error2Path)).toEqual(true);
 
     const error3: FileError = new FileError('message', {
@@ -106,8 +106,8 @@ describe(FileError.name, () => {
     // Because the file path is resolved on disk, the output will vary based on platform.
     // Only check that it ends as expected and is an absolute path.
     const error3Message: string = error3.getFormattedErrorMessage({ format: 'Unix' });
-    expect(error3Message).toMatch(/.+ - message$/);
-    const error3Path: string = error3Message.slice(0, error3Message.length - ' - message'.length);
+    expect(error3Message).toMatch(/.+:1:1 - message$/);
+    const error3Path: string = error3Message.slice(0, error3Message.length - ':1:1 - message'.length);
     expect(path.isAbsolute(error3Path)).toEqual(true);
 
     const error4: FileError = new FileError('message', {
@@ -117,8 +117,8 @@ describe(FileError.name, () => {
     // Because the file path is resolved on disk, the output will vary based on platform.
     // Only check that it ends as expected and is an absolute path.
     const error4Message: string = error4.getFormattedErrorMessage({ format: 'Unix' });
-    expect(error4Message).toMatch(/.+ - message$/);
-    const error4Path: string = error4Message.slice(0, error4Message.length - ' - message'.length);
+    expect(error4Message).toMatch(/.+:1:1 - message$/);
+    const error4Path: string = error4Message.slice(0, error4Message.length - ':1:1 - message'.length);
     expect(path.isAbsolute(error4Path)).toEqual(true);
   });
 
@@ -139,7 +139,7 @@ describe(FileError.name, () => {
       line: 5
     });
     expect(error2.getFormattedErrorMessage({ format: 'VisualStudio' })).toMatchInlineSnapshot(
-      `"path/to/file(5) - message"`
+      `"path/to/file(5,1) - message"`
     );
 
     const error3: FileError = new FileError('message', {
@@ -149,7 +149,7 @@ describe(FileError.name, () => {
       column: 12
     });
     expect(error3.getFormattedErrorMessage({ format: 'VisualStudio' })).toMatchInlineSnapshot(
-      `"path/to/file - message"`
+      `"path/to/file(1,1) - message"`
     );
 
     const error4: FileError = new FileError('message', {
@@ -157,7 +157,7 @@ describe(FileError.name, () => {
       projectFolder: '/path/to/project'
     });
     expect(error4.getFormattedErrorMessage({ format: 'VisualStudio' })).toMatchInlineSnapshot(
-      `"path/to/file - message"`
+      `"path/to/file(1,1) - message"`
     );
   });
 
@@ -183,8 +183,8 @@ describe(FileError.name, () => {
     // Because the file path is resolved on disk, the output will vary based on platform.
     // Only check that it ends as expected and is an absolute path.
     const error2Message: string = error2.getFormattedErrorMessage({ format: 'VisualStudio' });
-    expect(error2Message).toMatch(/.+\(5\) - message$/);
-    const error2Path: string = error2Message.slice(0, error2Message.length - '(5) - message'.length);
+    expect(error2Message).toMatch(/.+\(5,1\) - message$/);
+    const error2Path: string = error2Message.slice(0, error2Message.length - '(5,1) - message'.length);
     expect(path.isAbsolute(error2Path)).toEqual(true);
 
     const error3: FileError = new FileError('message', {
@@ -196,8 +196,8 @@ describe(FileError.name, () => {
     // Because the file path is resolved on disk, the output will vary based on platform.
     // Only check that it ends as expected and is an absolute path.
     const error3Message: string = error3.getFormattedErrorMessage({ format: 'VisualStudio' });
-    expect(error3Message).toMatch(/.+ - message$/);
-    const error3Path: string = error3Message.slice(0, error3Message.length - ' - message'.length);
+    expect(error3Message).toMatch(/.+\(1,1\) - message$/);
+    const error3Path: string = error3Message.slice(0, error3Message.length - '(1,1) - message'.length);
     expect(path.isAbsolute(error3Path)).toEqual(true);
 
     const error4: FileError = new FileError('message', {
@@ -207,8 +207,8 @@ describe(FileError.name, () => {
     // Because the file path is resolved on disk, the output will vary based on platform.
     // Only check that it ends as expected and is an absolute path.
     const error4Message: string = error4.getFormattedErrorMessage({ format: 'VisualStudio' });
-    expect(error4Message).toMatch(/.+ - message$/);
-    const error4Path: string = error4Message.slice(0, error4Message.length - ' - message'.length);
+    expect(error4Message).toMatch(/.+\(1,1\) - message$/);
+    const error4Path: string = error4Message.slice(0, error4Message.length - '(1,1) - message'.length);
     expect(path.isAbsolute(error4Path)).toEqual(true);
   });
 });

From 2e8acaa5d38c62f81d3adb6c0191051ea768c92c Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 20 Mar 2026 21:45:44 +0000
Subject: [PATCH 4/6] fix: line mandatory (defaults to 1), column optional in
 FileError.getFormattedErrorMessage

Co-authored-by: dmichon-msft <26827560+dmichon-msft@users.noreply.github.com>
Agent-Logs-Url: https://github.com/microsoft/rushstack/sessions/e0b803db-46de-4bf5-a531-31105741fbf8
---
 libraries/node-core-library/src/FileError.ts  |  6 +--
 .../src/test/FileError.test.ts                | 38 +++++++++----------
 2 files changed, 22 insertions(+), 22 deletions(-)

diff --git a/libraries/node-core-library/src/FileError.ts b/libraries/node-core-library/src/FileError.ts
index 7857bc8b036..5d7e3a1005a 100644
--- a/libraries/node-core-library/src/FileError.ts
+++ b/libraries/node-core-library/src/FileError.ts
@@ -50,7 +50,7 @@ const uuidFileError: string = '37a4c772-2dc8-4c66-89ae-262f8cc1f0c1';
 const baseFolderEnvVar: string = 'RUSHSTACK_FILE_ERROR_BASE_FOLDER';
 
 const unixProblemMatcherPattern: IProblemPattern = {
-  regexp: '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^:]+):(\\d+):(\\d+)\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
+  regexp: '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^:]+):(\\d+)(?::(\\d+))?\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
   severity: 1,
   file: 2,
   line: 3,
@@ -61,7 +61,7 @@ const unixProblemMatcherPattern: IProblemPattern = {
 
 const vsProblemMatcherPattern: IProblemPattern = {
   regexp:
-    '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^\\(]+)\\((\\d+),(\\d+)\\)\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
+    '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^\\(]+)\\((\\d+)(?:,(\\d+))?\\)\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
   severity: 1,
   file: 2,
   line: 3,
@@ -146,7 +146,7 @@ export class FileError extends Error {
       pathToFormat: this.absolutePath,
       message: this.message,
       line: this.line ?? 1,
-      column: this.column ?? 1
+      column: this.column
     });
   }
 
diff --git a/libraries/node-core-library/src/test/FileError.test.ts b/libraries/node-core-library/src/test/FileError.test.ts
index 9daee44a6b5..35c49e885d2 100644
--- a/libraries/node-core-library/src/test/FileError.test.ts
+++ b/libraries/node-core-library/src/test/FileError.test.ts
@@ -29,7 +29,7 @@ describe(FileError.name, () => {
       absolutePath: `/path/to/project/path/to/file`,
       projectFolder: '/path/to/project'
     });
-    expect(error1.toString()).toMatchInlineSnapshot(`"path/to/file:1:1 - message"`);
+    expect(error1.toString()).toMatchInlineSnapshot(`"path/to/file:1 - message"`);
   });
 
   it('correctly performs Unix-style relative file path formatting', () => {
@@ -49,7 +49,7 @@ describe(FileError.name, () => {
       line: 5
     });
     expect(error2.getFormattedErrorMessage({ format: 'Unix' })).toMatchInlineSnapshot(
-      `"path/to/file:5:1 - message"`
+      `"path/to/file:5 - message"`
     );
 
     const error3: FileError = new FileError('message', {
@@ -59,7 +59,7 @@ describe(FileError.name, () => {
       column: 12
     });
     expect(error3.getFormattedErrorMessage({ format: 'Unix' })).toMatchInlineSnapshot(
-      `"path/to/file:1:1 - message"`
+      `"path/to/file:1:12 - message"`
     );
 
     const error4: FileError = new FileError('message', {
@@ -67,7 +67,7 @@ describe(FileError.name, () => {
       projectFolder: '/path/to/project'
     });
     expect(error4.getFormattedErrorMessage({ format: 'Unix' })).toMatchInlineSnapshot(
-      `"path/to/file:1:1 - message"`
+      `"path/to/file:1 - message"`
     );
   });
 
@@ -93,8 +93,8 @@ describe(FileError.name, () => {
     // Because the file path is resolved on disk, the output will vary based on platform.
     // Only check that it ends as expected and is an absolute path.
     const error2Message: string = error2.getFormattedErrorMessage({ format: 'Unix' });
-    expect(error2Message).toMatch(/.+:5:1 - message$/);
-    const error2Path: string = error2Message.slice(0, error2Message.length - ':5:1 - message'.length);
+    expect(error2Message).toMatch(/.+:5 - message$/);
+    const error2Path: string = error2Message.slice(0, error2Message.length - ':5 - message'.length);
     expect(path.isAbsolute(error2Path)).toEqual(true);
 
     const error3: FileError = new FileError('message', {
@@ -106,8 +106,8 @@ describe(FileError.name, () => {
     // Because the file path is resolved on disk, the output will vary based on platform.
     // Only check that it ends as expected and is an absolute path.
     const error3Message: string = error3.getFormattedErrorMessage({ format: 'Unix' });
-    expect(error3Message).toMatch(/.+:1:1 - message$/);
-    const error3Path: string = error3Message.slice(0, error3Message.length - ':1:1 - message'.length);
+    expect(error3Message).toMatch(/.+:1:12 - message$/);
+    const error3Path: string = error3Message.slice(0, error3Message.length - ':1:12 - message'.length);
     expect(path.isAbsolute(error3Path)).toEqual(true);
 
     const error4: FileError = new FileError('message', {
@@ -117,8 +117,8 @@ describe(FileError.name, () => {
     // Because the file path is resolved on disk, the output will vary based on platform.
     // Only check that it ends as expected and is an absolute path.
     const error4Message: string = error4.getFormattedErrorMessage({ format: 'Unix' });
-    expect(error4Message).toMatch(/.+:1:1 - message$/);
-    const error4Path: string = error4Message.slice(0, error4Message.length - ':1:1 - message'.length);
+    expect(error4Message).toMatch(/.+:1 - message$/);
+    const error4Path: string = error4Message.slice(0, error4Message.length - ':1 - message'.length);
     expect(path.isAbsolute(error4Path)).toEqual(true);
   });
 
@@ -139,7 +139,7 @@ describe(FileError.name, () => {
       line: 5
     });
     expect(error2.getFormattedErrorMessage({ format: 'VisualStudio' })).toMatchInlineSnapshot(
-      `"path/to/file(5,1) - message"`
+      `"path/to/file(5) - message"`
     );
 
     const error3: FileError = new FileError('message', {
@@ -149,7 +149,7 @@ describe(FileError.name, () => {
       column: 12
     });
     expect(error3.getFormattedErrorMessage({ format: 'VisualStudio' })).toMatchInlineSnapshot(
-      `"path/to/file(1,1) - message"`
+      `"path/to/file(1,12) - message"`
     );
 
     const error4: FileError = new FileError('message', {
@@ -157,7 +157,7 @@ describe(FileError.name, () => {
       projectFolder: '/path/to/project'
     });
     expect(error4.getFormattedErrorMessage({ format: 'VisualStudio' })).toMatchInlineSnapshot(
-      `"path/to/file(1,1) - message"`
+      `"path/to/file(1) - message"`
     );
   });
 
@@ -183,8 +183,8 @@ describe(FileError.name, () => {
     // Because the file path is resolved on disk, the output will vary based on platform.
     // Only check that it ends as expected and is an absolute path.
     const error2Message: string = error2.getFormattedErrorMessage({ format: 'VisualStudio' });
-    expect(error2Message).toMatch(/.+\(5,1\) - message$/);
-    const error2Path: string = error2Message.slice(0, error2Message.length - '(5,1) - message'.length);
+    expect(error2Message).toMatch(/.+\(5\) - message$/);
+    const error2Path: string = error2Message.slice(0, error2Message.length - '(5) - message'.length);
     expect(path.isAbsolute(error2Path)).toEqual(true);
 
     const error3: FileError = new FileError('message', {
@@ -196,8 +196,8 @@ describe(FileError.name, () => {
     // Because the file path is resolved on disk, the output will vary based on platform.
     // Only check that it ends as expected and is an absolute path.
     const error3Message: string = error3.getFormattedErrorMessage({ format: 'VisualStudio' });
-    expect(error3Message).toMatch(/.+\(1,1\) - message$/);
-    const error3Path: string = error3Message.slice(0, error3Message.length - '(1,1) - message'.length);
+    expect(error3Message).toMatch(/.+\(1,12\) - message$/);
+    const error3Path: string = error3Message.slice(0, error3Message.length - '(1,12) - message'.length);
     expect(path.isAbsolute(error3Path)).toEqual(true);
 
     const error4: FileError = new FileError('message', {
@@ -207,8 +207,8 @@ describe(FileError.name, () => {
     // Because the file path is resolved on disk, the output will vary based on platform.
     // Only check that it ends as expected and is an absolute path.
     const error4Message: string = error4.getFormattedErrorMessage({ format: 'VisualStudio' });
-    expect(error4Message).toMatch(/.+\(1,1\) - message$/);
-    const error4Path: string = error4Message.slice(0, error4Message.length - '(1,1) - message'.length);
+    expect(error4Message).toMatch(/.+\(1\) - message$/);
+    const error4Path: string = error4Message.slice(0, error4Message.length - '(1) - message'.length);
     expect(path.isAbsolute(error4Path)).toEqual(true);
   });
 });

From 2de5738ad43b2a3bb674b043aa13082c2cc6dc8c Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 20 Mar 2026 21:48:21 +0000
Subject: [PATCH 5/6] fix: update problem matcher regexes in
 rush-vscode-extension package.json to make column optional

Co-authored-by: dmichon-msft <26827560+dmichon-msft@users.noreply.github.com>
Agent-Logs-Url: https://github.com/microsoft/rushstack/sessions/8b2eb275-c191-44e9-8d69-dd1c166c7985
---
 vscode-extensions/rush-vscode-extension/package.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/vscode-extensions/rush-vscode-extension/package.json b/vscode-extensions/rush-vscode-extension/package.json
index cc524ace78e..e7df616b98c 100644
--- a/vscode-extensions/rush-vscode-extension/package.json
+++ b/vscode-extensions/rush-vscode-extension/package.json
@@ -228,7 +228,7 @@
         ],
         "applyTo": "allDocuments",
         "pattern": {
-          "regexp": "^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^:]+):(\\d+):(\\d+)\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$",
+          "regexp": "^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^:]+):(\\d+)(?::(\\d+))?\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$",
           "severity": 1,
           "file": 2,
           "line": 3,
@@ -247,7 +247,7 @@
         ],
         "applyTo": "allDocuments",
         "pattern": {
-          "regexp": "^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^\\(]+)\\((\\d+),(\\d+)\\)\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$",
+          "regexp": "^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^\\(]+)\\((\\d+)(?:,(\\d+))?\\)\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$",
           "severity": 1,
           "file": 2,
           "line": 3,

From 3cfd6ed729913b262599eaa9fce0a76a3e0c1f12 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 20 Mar 2026 22:39:17 +0000
Subject: [PATCH 6/6] fix: scope PR to OperationExecutionRecord only; revert
 FileError changes; add @microsoft/rush patch change file

Co-authored-by: dmichon-msft <26827560+dmichon-msft@users.noreply.github.com>
Agent-Logs-Url: https://github.com/microsoft/rushstack/sessions/1bcedf3e-f266-4978-ad80-c7ccb325056a
---
 ...m-collector-pipeline_2026-03-20-22-38.json | 10 +++++++
 libraries/node-core-library/src/FileError.ts  |  6 ++---
 .../src/test/FileError.test.ts                | 26 +++++++++----------
 .../rush-vscode-extension/package.json        |  4 +--
 4 files changed, 28 insertions(+), 18 deletions(-)
 create mode 100644 common/changes/@microsoft/rush/fix-problem-collector-pipeline_2026-03-20-22-38.json

diff --git a/common/changes/@microsoft/rush/fix-problem-collector-pipeline_2026-03-20-22-38.json b/common/changes/@microsoft/rush/fix-problem-collector-pipeline_2026-03-20-22-38.json
new file mode 100644
index 00000000000..84060c0c50b
--- /dev/null
+++ b/common/changes/@microsoft/rush/fix-problem-collector-pipeline_2026-03-20-22-38.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@microsoft/rush",
+      "comment": "Fix ProblemCollector wiring in OperationExecutionRecord: add preventAutoclose, strip ANSI colors before matching, and always include problemCollector in the terminal pipeline",
+      "type": "patch"
+    }
+  ],
+  "packageName": "@microsoft/rush"
+}
diff --git a/libraries/node-core-library/src/FileError.ts b/libraries/node-core-library/src/FileError.ts
index 5d7e3a1005a..32fac1b5742 100644
--- a/libraries/node-core-library/src/FileError.ts
+++ b/libraries/node-core-library/src/FileError.ts
@@ -50,7 +50,7 @@ const uuidFileError: string = '37a4c772-2dc8-4c66-89ae-262f8cc1f0c1';
 const baseFolderEnvVar: string = 'RUSHSTACK_FILE_ERROR_BASE_FOLDER';
 
 const unixProblemMatcherPattern: IProblemPattern = {
-  regexp: '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^:]+):(\\d+)(?::(\\d+))?\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
+  regexp: '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^:]+):(\\d+):(\\d+)\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
   severity: 1,
   file: 2,
   line: 3,
@@ -61,7 +61,7 @@ const unixProblemMatcherPattern: IProblemPattern = {
 
 const vsProblemMatcherPattern: IProblemPattern = {
   regexp:
-    '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^\\(]+)\\((\\d+)(?:,(\\d+))?\\)\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
+    '^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^\\(]+)\\((\\d+),(\\d+)\\)\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$',
   severity: 1,
   file: 2,
   line: 3,
@@ -145,7 +145,7 @@ export class FileError extends Error {
       baseFolder: this._evaluateBaseFolder(),
       pathToFormat: this.absolutePath,
       message: this.message,
-      line: this.line ?? 1,
+      line: this.line,
       column: this.column
     });
   }
diff --git a/libraries/node-core-library/src/test/FileError.test.ts b/libraries/node-core-library/src/test/FileError.test.ts
index 35c49e885d2..03887d624fd 100644
--- a/libraries/node-core-library/src/test/FileError.test.ts
+++ b/libraries/node-core-library/src/test/FileError.test.ts
@@ -29,7 +29,7 @@ describe(FileError.name, () => {
       absolutePath: `/path/to/project/path/to/file`,
       projectFolder: '/path/to/project'
     });
-    expect(error1.toString()).toMatchInlineSnapshot(`"path/to/file:1 - message"`);
+    expect(error1.toString()).toMatchInlineSnapshot(`"path/to/file - message"`);
   });
 
   it('correctly performs Unix-style relative file path formatting', () => {
@@ -59,7 +59,7 @@ describe(FileError.name, () => {
       column: 12
     });
     expect(error3.getFormattedErrorMessage({ format: 'Unix' })).toMatchInlineSnapshot(
-      `"path/to/file:1:12 - message"`
+      `"path/to/file - message"`
     );
 
     const error4: FileError = new FileError('message', {
@@ -67,7 +67,7 @@ describe(FileError.name, () => {
       projectFolder: '/path/to/project'
     });
     expect(error4.getFormattedErrorMessage({ format: 'Unix' })).toMatchInlineSnapshot(
-      `"path/to/file:1 - message"`
+      `"path/to/file - message"`
     );
   });
 
@@ -106,8 +106,8 @@ describe(FileError.name, () => {
     // Because the file path is resolved on disk, the output will vary based on platform.
     // Only check that it ends as expected and is an absolute path.
     const error3Message: string = error3.getFormattedErrorMessage({ format: 'Unix' });
-    expect(error3Message).toMatch(/.+:1:12 - message$/);
-    const error3Path: string = error3Message.slice(0, error3Message.length - ':1:12 - message'.length);
+    expect(error3Message).toMatch(/.+ - message$/);
+    const error3Path: string = error3Message.slice(0, error3Message.length - ' - message'.length);
     expect(path.isAbsolute(error3Path)).toEqual(true);
 
     const error4: FileError = new FileError('message', {
@@ -117,8 +117,8 @@ describe(FileError.name, () => {
     // Because the file path is resolved on disk, the output will vary based on platform.
     // Only check that it ends as expected and is an absolute path.
     const error4Message: string = error4.getFormattedErrorMessage({ format: 'Unix' });
-    expect(error4Message).toMatch(/.+:1 - message$/);
-    const error4Path: string = error4Message.slice(0, error4Message.length - ':1 - message'.length);
+    expect(error4Message).toMatch(/.+ - message$/);
+    const error4Path: string = error4Message.slice(0, error4Message.length - ' - message'.length);
     expect(path.isAbsolute(error4Path)).toEqual(true);
   });
 
@@ -149,7 +149,7 @@ describe(FileError.name, () => {
       column: 12
     });
     expect(error3.getFormattedErrorMessage({ format: 'VisualStudio' })).toMatchInlineSnapshot(
-      `"path/to/file(1,12) - message"`
+      `"path/to/file - message"`
     );
 
     const error4: FileError = new FileError('message', {
@@ -157,7 +157,7 @@ describe(FileError.name, () => {
       projectFolder: '/path/to/project'
     });
     expect(error4.getFormattedErrorMessage({ format: 'VisualStudio' })).toMatchInlineSnapshot(
-      `"path/to/file(1) - message"`
+      `"path/to/file - message"`
     );
   });
 
@@ -196,8 +196,8 @@ describe(FileError.name, () => {
     // Because the file path is resolved on disk, the output will vary based on platform.
     // Only check that it ends as expected and is an absolute path.
     const error3Message: string = error3.getFormattedErrorMessage({ format: 'VisualStudio' });
-    expect(error3Message).toMatch(/.+\(1,12\) - message$/);
-    const error3Path: string = error3Message.slice(0, error3Message.length - '(1,12) - message'.length);
+    expect(error3Message).toMatch(/.+ - message$/);
+    const error3Path: string = error3Message.slice(0, error3Message.length - ' - message'.length);
     expect(path.isAbsolute(error3Path)).toEqual(true);
 
     const error4: FileError = new FileError('message', {
@@ -207,8 +207,8 @@ describe(FileError.name, () => {
     // Because the file path is resolved on disk, the output will vary based on platform.
     // Only check that it ends as expected and is an absolute path.
     const error4Message: string = error4.getFormattedErrorMessage({ format: 'VisualStudio' });
-    expect(error4Message).toMatch(/.+\(1\) - message$/);
-    const error4Path: string = error4Message.slice(0, error4Message.length - '(1) - message'.length);
+    expect(error4Message).toMatch(/.+ - message$/);
+    const error4Path: string = error4Message.slice(0, error4Message.length - ' - message'.length);
     expect(path.isAbsolute(error4Path)).toEqual(true);
   });
 });
diff --git a/vscode-extensions/rush-vscode-extension/package.json b/vscode-extensions/rush-vscode-extension/package.json
index e7df616b98c..cc524ace78e 100644
--- a/vscode-extensions/rush-vscode-extension/package.json
+++ b/vscode-extensions/rush-vscode-extension/package.json
@@ -228,7 +228,7 @@
         ],
         "applyTo": "allDocuments",
         "pattern": {
-          "regexp": "^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^:]+):(\\d+)(?::(\\d+))?\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$",
+          "regexp": "^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^:]+):(\\d+):(\\d+)\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$",
           "severity": 1,
           "file": 2,
           "line": 3,
@@ -247,7 +247,7 @@
         ],
         "applyTo": "allDocuments",
         "pattern": {
-          "regexp": "^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^\\(]+)\\((\\d+)(?:,(\\d+))?\\)\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$",
+          "regexp": "^\\[[^\\]]+\\]\\s+(Error|Warning):\\s+([^\\(]+)\\((\\d+),(\\d+)\\)\\s+-\\s+(?:\\(([^)]+)\\)\\s+)?(.*)$",
           "severity": 1,
           "file": 2,
           "line": 3,