> cursor(4,0) is the _value_ of the function. For instance, in a Vim compiled > with +float, acos(-1) is the arc-cosine (in radians) of minus one, i.e., the > number pi. All functions return a value (if you execute a :return statement > without an explicit return value, the function returns the integer zero). > > You can use that value in an expression: e.g. > > if cursor(4,0) > echoerr 'Couldn't set cursor to (4,0)' > endif > > With :call, you call the function and throw away the return value — meaning > that in that case you're only interested in the "side effects" (moving the > cursor, in this example) and not in the result (for an arithmetic function, > the result of the calculation; the result of the cursor() function can be 0 > for success or -1 for failure). > > ":help :call" says it quite clearly IMO: see the first and last sentences > of its first paragraph, quoted below: > > Call a function. The name of the function and its >> arguments >> are as specified with |:function|. Up to 20 arguments can >> be >> used. The returned value is discarded. >> > > > Hi,
I understand it better now. Thanks for the comments. By the way, I think I was searching the wrong thing. ":help :call" is clear, you are right, but what I tried was ":help call" and I got a little bit puzzled. My fault. Thanks all of you for your comments. Cheers, Jose -- You received this message from the "vim_use" maillist. Do not top-post! Type your reply below the text you are replying to. For more information, visit http://www.vim.org/maillist.php
