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Scrolling horizontally is hard. Warning someone that posts code that is larger than 80 characters against the readability problem this causes would be a solution to avoid then from the start.

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We already have a question preview area that shows things fairly faithfully. What kind of additional warning are you proposing? –  Pops Nov 29 '11 at 19:38
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Having trouble in your CRT terminal? –  Marcelo Nov 29 '11 at 19:42
    
-1, 80 is maximum including tab 4 character in linux kernel development. so that per line you read less (put more attention, what u just readed) but vertically read more. –  YumYumYum Nov 29 '11 at 19:43
    
@PopularDemand : a non modal message, something that warns, or at least, notices. –  greg0ire Nov 29 '11 at 19:49
    
@Marcelo: "lol" –  greg0ire Nov 29 '11 at 19:49
    
@PopularDemand: One could also imagine a two-limit system, like phpcodesniffer does : 80 characters => notice; 150 characters => warning –  greg0ire Nov 29 '11 at 19:57
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I'd rather see some way to open a code block in some much wider popup. (Or maybe some copy code option.) But I agree: on systems that do not show scrollbars unless one is scrolling (like mobile devices, or like OS X Lion's default settings) I dislike scrolling code even more. –  Arjan Nov 29 '11 at 21:52
    
@Arjan: that's also a good solution, but it's something that could be done too, not instead of. –  greg0ire Nov 29 '11 at 22:00
    
@Google: You downvote me, and then you say something that seems to argue in favor of what I'm saying (though I'm not sure I understand what you put between brackets) –  greg0ire Nov 29 '11 at 22:01

2 Answers 2

The number of characters at which horizontal scroll bars are produced is not universal. See:

What is the average number of characters in a Code block before scroll bars appear?

Since I asked that question I am using a different system, and now the max char width does not change with zoom, but it is still nonstandard (currently 87 characters).

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And on the mobile theme, things are even more different. –  Arjan Nov 29 '11 at 19:57
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Still, I think there should be a limit, and the norm seems to be 80 characters. –  greg0ire Nov 29 '11 at 20:04

Ow Ow Ow.

I have a cramp from scrolling horizontally....

Yes I am being facetious.

How is it so hard to scroll horizontally?

If the code is that long, that is what will happen, I see no reason to discourage it unless it makes it so that you cannot read the code.

AHHH

But if you take that above sentence and put it like this:

 If the code is that long, that is what will happen, I see no reason to discourage it unless it makes it so that you cannot read the code.

YES it is very uneasy to read.

In that situation I would discourage the post, but how is the system to know the difference between that and:

  function areallyreallylongfunctionnamethattakesupawholelinewhichisbadpracticebutitistheopscode(){
      .....
  }
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Well, if it's just a warning, the system doesn't have to distinguish between them. –  Richard JP Le Guen Nov 29 '11 at 19:42
    
If you have such method names, then you have a problem: perhaps your class has too much methods in it. –  greg0ire Nov 29 '11 at 19:47
    
Note that some systems only show scrollbars while actually scrolling. Like when using Mac OS X Lion's default settings, one has no real indication that something is scrollable. (Apart from the text being cut off, if applicable. On Macs I use, I set the scrollbars to be always visible.) Also some tablets behave like that, though the mobile theme tries to outsmart those by wrapping code blocks. –  Arjan Nov 29 '11 at 21:56

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