Function: get-unused-category

get-unused-category is a function defined in category.c.

Signature

(get-unused-category &optional TABLE)

Documentation

Return a category which is not yet defined in TABLE.

If no category remains available, return nil. The optional argument TABLE specifies which category table to modify; it defaults to the current buffer's category table.

View in manual

Source Code

// Defined in /usr/src/emacs/src/category.c
{
  int i;

  table = check_category_table (table);

  for (i = ' '; i <= '~'; i++)
    if (NILP (CATEGORY_DOCSTRING (table, i)))
      return make_fixnum (i);

  return Qnil;
}