Function            ispathname - character classification

  Syntax              boolean ispathname(int c);

  Prototype in        keyboard.h

  Remarks             determines if a character is valid for a DOS
                      pathname. The following characters are NOT allowed:

                           ;  ,  =  +  tab  space  <  >  |  /  "  [  ]

  Return value        returns true if c is a valid DOS pathname
                      character, FALSE otherwise.

  Note                This function checks if a character is legal for a
                      DOS pathname. Use isfilename() to check for a valid
                      DOS filename.ext character.

  See also            isfilename()