diff --git a/.github/workflows/doc-problem-match.json b/.github/workflows/doc-problem-match.json
new file mode 100644
index 00000000000..8069361dd38
--- /dev/null
+++ b/.github/workflows/doc-problem-match.json
@@ -0,0 +1,16 @@
+{
+  "problemMatcher": [
+    {
+      "owner": "latex-parser",
+      "pattern": [
+        {
+          "regexp": "^\\[LATEX(WARNING|ERROR)::(.*?):(\\d+)::(.*?)\\]$",
+          "severity": 1,
+          "file": 2,
+          "line": 3,
+          "message": 4
+        }
+      ]
+    }
+  ]
+}
\ No newline at end of file
diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index 6f738a304da..491f604cbae 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -23,7 +23,10 @@ jobs:
 
     - name: Configure CMake
       working-directory: ${{runner.workspace}}/EnergyPlus/doc/build
-      run: cmake -DTEX_INTERACTION=batchmode ..
+      run: cmake -DTEX_INTERACTION=batchmode -DDOCS_TESTING=ON ..
+
+    - name: Add problem matcher
+      run: echo "::add-matcher::.github/workflows/doc-problem-match.json"
 
     - name: Build Docs
       working-directory: ${{runner.workspace}}/EnergyPlus/doc/build
diff --git a/doc/tools/parse_latex_log.py b/doc/tools/parse_latex_log.py
index a91f35e9c02..e5c00e933ef 100644
--- a/doc/tools/parse_latex_log.py
+++ b/doc/tools/parse_latex_log.py
@@ -168,40 +168,6 @@ def find_multiply_defined_labels(root_dir, label):
     target = "\\label{" + label + "}"
     return find_locations(root_dir, target)
 
-
-def parse_warning(line, src_dir):
-    """
-    - line: string, the line to parse
-    - src_dir: string, the root directory of the LaTeX source files
-    RETURN: None or one of:
-    - {'type': 'Label multiply defined',
-       'label': string,
-       'message': string}
-    - {'type': 'Hyper reference undefined',
-       'label': string,
-       'message': string}
-    """
-    m = LABEL_MULTIPLY_DEFINED_WARN.match(line)
-    if m is not None:
-        label = m.group(1)
-        locations = find_multiply_defined_labels(src_dir, label)
-        return {'severity': SEVERITY_WARNING,
-                'type': "Label multiply defined",
-                'locations': locations,
-                'message': line,
-                'label': m.group(1)}
-    m = HYPER_UNDEFINED_WARN.match(line)
-    if m is not None:
-        label = m.group(1)
-        locations = find_undefined_hyperref(src_dir, label)
-        return {'severity': SEVERITY_WARNING,
-                'type': "Hyper reference undefined",
-                'locations': locations,
-                'message': line,
-                'label': m.group(1)}
-    return None
-
-
 def parse_line_number(message):
     """
     - message: string
@@ -233,41 +199,56 @@ def __init__(self, log_path, src_dir, verbose=False):
         self.src_dir = src_dir
         self.verbose = verbose
 
-    def _read_tex_error(self, line):
+    def _read_tex_error(self):
         line_no = parse_line_number(self._current_issue)
         self._issues['issues'].append({
-            'severity': SEVERITY_ERROR,
+            'level': SEVERITY_ERROR,
             'type': self._type,
-            'locations': [{
-                'file': self._current_tex_file,
-                'line': line_no}],
+            'path': self._current_tex_file,
+            'line': {"start": line_no, "end": line_no},
             'message': self._current_issue.strip()})
 
-    def _read_warning(self, line):
-        warn = parse_warning(self._current_issue, self.src_dir)
-        if self._current_issue.strip() not in ISSUES_TO_SKIP:
-            if warn is not None:
-                self._issues['issues'].append(warn)
-            else:
-                line_no = parse_on_input_line(self._current_issue)
-                self._issues['issues'].append({
-                    'severity': SEVERITY_WARNING,
-                    'type': self._type,
-                    'locations': [{
-                        'file': self._current_tex_file,
-                        'line': line_no}],
-                    'message': self._current_issue.strip()})
-
-    def _read_error(self, line):
-        if self._current_issue not in ISSUES_TO_SKIP:
+    def _read_warning(self):
+        warns = []
+        m1 = LABEL_MULTIPLY_DEFINED_WARN.match(self._current_issue)
+        m2 = HYPER_UNDEFINED_WARN.match(self._current_issue)
+        if m1 is not None:
+            label = m1.group(1)
+            locations = find_multiply_defined_labels(self.src_dir, label)
+            for loc in locations:
+                warns.append({
+                    'level': SEVERITY_WARNING,
+                    'type': "Label multiply defined",
+                    'path': loc["file"],
+                    'line': {"start": loc["line"], "end": loc["line"]},
+                    'message': self._current_issue.strip(),
+                    'label': m1.group(1)
+                })
+        elif m2 is not None:
+            label = m2.group(1)
+            locations = find_undefined_hyperref(self.src_dir, label)
+            for loc in locations:
+                warns.append({
+                    'level': SEVERITY_WARNING,
+                    'type': "Hyper reference undefined",
+                    'path': loc["file"],
+                    'line': {"start": loc["line"], "end": loc["line"]},
+                    'message': self._current_issue.strip(),
+                    'label': m2.group(1)
+                })
+        elif self._current_issue.strip() not in ISSUES_TO_SKIP:
             line_no = parse_on_input_line(self._current_issue)
-            self._issues['issues'].append({
-                'severity': SEVERITY_ERROR,
+            warns = [{
+                'level': SEVERITY_WARNING,
                 'type': self._type,
-                'locations': [{
-                    'file': self._current_tex_file,
-                    'line': line_no}],
-                'message': self._current_issue.strip()})
+                'path': self._current_tex_file,
+                'line': {"start": line_no, "end": line_no},
+                'message': self._current_issue.strip()}]
+        self._issues['issues'] += warns
+
+    def _read_error(self):
+        if self._current_issue not in ISSUES_TO_SKIP:
+            self._read_tex_error()
 
     def _read_issue(self, line):
         is_ws = (line.strip() == "")
@@ -275,11 +256,11 @@ def _read_issue(self, line):
         nonempty = len(line) > 1
         if is_ws and (not (first_line and nonempty)):
             if self._in_tex_err:
-                self._read_tex_error(line)
+                self._read_tex_error()
             elif self._in_warn:
-                self._read_warning(line)
+                self._read_warning()
             elif self._in_err:
-                self._read_error(line)
+                self._read_error()
             else:
                 raise Exception("unhandled issue read")
             self._reset_after_read()
@@ -388,16 +369,10 @@ def update_paths_to_be_from_repo_root(issues, repo_root_to_src):
     updated = []
     for issue in issues:
         update = copy.deepcopy(issue)
-        if 'locations' in update:
-            new_locs = []
-            for location in update['locations']:
-                loc = copy.deepcopy(location)
-                if 'file' in location:
-                    loc['file'] = os.path.join(
-                            repo_root_to_src,
-                            location['file'])
-                new_locs.append(loc)
-            update['locations'] = new_locs
+        if 'path' in update:
+            update['path'] = os.path.join(
+                    repo_root_to_src,
+                    update['path'])
         updated.append(update)
     return updated
 
@@ -440,16 +415,14 @@ def find_issues(log_path, json_error_path, src_dir):
         f = sys.stdout
         for issue in errs['issues']:
             f.write("[LATEX")
-            f.write(issue['severity'] + "::")
-            locs = [loc['file'] + ":" + str(loc['line'])
-                    for loc in issue['locations']]
-            f.write(",".join(locs) + "::")
+            f.write(issue['level'] + "::")
+            f.write(issue['path'] + ":" + str(issue["line"]["start"]))
             msg = issue['message'].replace("\r\n", " ")
             msg = msg.replace("\n", " ")
             msg = msg.replace("\r", " ")
             msg = msg.replace("\t", " ")
             msg = " ".join(msg.split())
-            f.write(msg + "]\n")
+            f.write("::" + msg + "]\n")
         with open(json_error_path, 'w', encoding='utf-8') as f:
             json.dump(errs, f, ensure_ascii=False, indent=4)
     return (num_issues > 0)
diff --git a/third_party/.gitignore b/third_party/.gitignore
index 160acb328b4..6ce591f34ab 100644
--- a/third_party/.gitignore
+++ b/third_party/.gitignore
@@ -30,7 +30,8 @@ kiva-ep/README.md
 
 # submodules
 penumbra/.gitmodules
+btwxt/.gitmodules
 
-# unused btwxt repo directories/files
+# unused repo directories/files
 btwxt/vendor/googletest
-btwxt/.gitmodules
+penumbra/vendor/googletest
diff --git a/third_party/penumbra/.gitmodules b/third_party/penumbra/.gitmodules
deleted file mode 100644
index bdd892eb741..00000000000
--- a/third_party/penumbra/.gitmodules
+++ /dev/null
@@ -1,9 +0,0 @@
-[submodule "vendor/glfw"]
-	path = vendor/glfw
-	url = https://github.com/glfw/glfw.git
-[submodule "vendor/libtess2"]
-	path = vendor/libtess2
-	url = https://github.com/bigladder/libtess2.git
-[submodule "vendor/googletest"]
-	path = vendor/googletest
-	url = https://github.com/google/googletest.git
\ No newline at end of file
diff --git a/third_party/penumbra/vendor/googletest b/third_party/penumbra/vendor/googletest
deleted file mode 160000
index 2fe3bd994b3..00000000000
--- a/third_party/penumbra/vendor/googletest
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 2fe3bd994b3189899d93f1d5a881e725e046fdc2