extern int current_column;
extern char* current_filename;
extern char* current_filename_short;
extern int current_column;
extern char* current_filename;
extern char* current_filename_short;
void enter_file(const char*name, const char*filename, void*state);
FILE* enter_file2(const char*name, const char*filename, void*state);
void* leave_file();
char* concat_paths(const char*base, const char*add);
char* normalize_path(const char*path);
void enter_file(const char*name, const char*filename, void*state);
FILE* enter_file2(const char*name, const char*filename, void*state);
void* leave_file();
char* concat_paths(const char*base, const char*add);
char* normalize_path(const char*path);