They certainly can and do and sometimes that will bork stuff... but I don't know any way a simple tick could, in your word "break" the HTML page; an ASCII "'" does NOT (in my experience) cause any issue with a browser's rendering. Perhaps this is merely incautious phrasing, but if not, I'd be interested in an example to clarify my understanding.
Attribute values inside an HTML element, when you're using the same type of quotes around the element in question:
<img alt='Bob's Birthday Party' src='birthday.jpg' height='480' width='640'>
You might have the same issue with double quotes, if you're double quoting the values of the attributes.
In reply to Re^2: Trouble Getting Local Variable $_ to return reformatted string
by jhourcle
in thread Trouble Getting Local Variable $_ to return reformatted string
by Anonymous Monk
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