FROM_FILE_P       375 src/lread.c      if (FROM_FILE_P (readcharfun))
FROM_FILE_P       399 src/lread.c      if (FROM_FILE_P (readcharfun))
FROM_FILE_P       461 src/lread.c      else if (FROM_FILE_P (readcharfun))
FROM_FILE_P      3437 src/lread.c      if (load_force_doc_strings && FROM_FILE_P (readcharfun))