You can identify elements of excessive length (for whatever value of 'excessive' works for your ap) using length ([perldocdoc://length]), and then handle such cases with CSS2's "overflow" (CSS3 also offers "overflow-x).
For CSS2, see http://www.w3schools.com/Css/pr_pos_overflow.asp which offers an example similar to this:
div { width: 240px; max-width: 240px; // Belt and suspenders. Rarely needed height: 200px; overflow: scroll; }
Div's with this styling will add vertical and horizontal scrollbars, perhaps calling visitors' attention to the run-on lines more effectively than the horizontal scrollbar at the base of the browser window.
As a very rough rule of thumb, for ordinary fonts, your 40 chars spec translates to a width of about 240px (but you may need to reduce that, depending on your design, to allow for the vertical scrollbar width.
In reply to Re: how to find and split long words
by ww
in thread how to find and split long words
by keiusui
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