153       std::optional<SourcePosition> position{provenance  in EmitPreprocessedSource()  local
156       if (lineDirectives && column == 1 && position) {  in EmitPreprocessedSource()
157         if (&position->file != sourceFile) {  in EmitPreprocessedSource()
158           out << "#line \"" << position->file.path() << "\" " << position->line  in EmitPreprocessedSource()
160         } else if (position->line != sourceLine) {  in EmitPreprocessedSource()
161           if (sourceLine < position->line &&  in EmitPreprocessedSource()
162               sourceLine + 10 >= position->line) {  in EmitPreprocessedSource()
166             while (sourceLine++ < position->line) {  in EmitPreprocessedSource()
170             out << "#line " << position->line << '\n';  in EmitPreprocessedSource()
173         sourceFile = &position->file;  in EmitPreprocessedSource()
174         sourceLine = position->line;  in EmitPreprocessedSource()
200       if (!inContinuation && position && position->column <= 72 && ch != ' ') {  in EmitPreprocessedSource()
202         for (; column < position->column; ++column) {  in EmitPreprocessedSource()