GL_COPY_ERR_OPEN_READ   57 maint/gnulib/lib/copy-file.c     return GL_COPY_ERR_OPEN_READ;
GL_COPY_ERR_OPEN_READ   60 maint/gnulib/lib/copy-file.c       err = GL_COPY_ERR_OPEN_READ;
GL_COPY_ERR_OPEN_READ  191 maint/gnulib/lib/copy-file.c     case GL_COPY_ERR_OPEN_READ: