Info Catalog eintr: Optional Arguments eintr: beginning-of-buffer eintr: beginning-of-buffer complete

eintr: beginning-of-buffer opt arg

 
 5.3.2 ‘beginning-of-buffer’ with an Argument
 --------------------------------------------
 
 When ‘beginning-of-buffer’ is called with an argument, an expression is
 evaluated which calculates what value to pass to ‘goto-char’.  This
 expression is rather complicated at first sight.  It includes an inner
 ‘if’ expression and much arithmetic.  It looks like this:
 
      (if (> (buffer-size) 10000)
          ;; Avoid overflow for large buffer sizes!
                                (* (prefix-numeric-value arg)
                                   (/ size 10))
        (/
         (+ 10
            (*
             size (prefix-numeric-value arg))) 10)))
 

Menu

 
· Disentangle beginning-of-buffer
· Large buffer case
· Small buffer case
 

Info Catalog eintr: Optional Arguments eintr: beginning-of-buffer eintr: beginning-of-buffer complete