Add back support for plainproblemname

problemtools/statement_util.py

@@ -47,7 +47,10 @@ def load_names_from_statements(problem_root: Path, version: FormatVersion) -> di
     assert version is FormatVersion.LEGACY, 'load_names_from_statements only makes sense for legacy format'
     ret: dict[str, str] = {}
     for lang, files in find_statements(problem_root, version).items():
-        hit = re.search(r'\\problemname{(.*)}', files[0].read_text(), re.MULTILINE)
+        text = files[0].read_text()
+        flags = re.MULTILINE
+        # Two separate searches, as we want plainproblemname to override problemname if both exist.
+        hit = re.search(r'^%%\s*plainproblemname:(.*)$', text, flags) or re.search(r'\\problemname{(.*)}', text, flags)
         if hit:
             ret[lang] = hit.group(1).strip()
     return ret

problemtools/verifyproblem.py

@@ -839,6 +839,9 @@ def check(self, context: Context) -> bool:
                 f'No problem statements found (expected file of one of following forms in directory {self.problem.format.statement_directory}/: {allowed_statements})'
             )
 
+        def _latex_heuristic(name: str) -> bool:
+            return '\\' in name or '$' in name
+
         for lang, files in self.statements.items():
             if len(files) > 1:
                 self.error(f'Found multiple statements in the same language {lang}: {", ".join((file.name for file in files))}')
@@ -849,6 +852,8 @@ def check(self, context: Context) -> bool:
                 self.error(f'Problem name in language {lang} is empty')
             elif not self.problem.metadata.name[lang].strip():
                 self.error(f'Problem name in language {lang} contains only whitespace')
+            elif self.problem.format is FormatVersion.LEGACY and _latex_heuristic(self.problem.metadata.name[lang]):
+                self.warning(f'Problem name in language {lang} looks like LaTeX. Consider using plainproblemname.')
 
             for file in files:
                 try:

tests/hello/problem_statement/problem.sv.tex

@@ -1,4 +1,5 @@
-\problemname{Hej Världen!}
+\problemname{Hej V\"arlden!} % Silly use of LaTeX just to test plainproblemname
+%% plainproblemname: Hej Världen!
 
 \section*{Indata}