Tickets :: Comment on [#7031] Colons within quoted parameter values are not handled correctly

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Comment	> It's far more complicated than that unfortunately, because the same > regex must also parse vCalendar 1.0 properties which are escaped > differently. Those only require semicolons in parameter values to be > escaped by a preceding backslash. > > > > I came up with the following so far: > > > > $name_re = '[-a-zA-Z0-9]+'; > > $param_text_re = '[^";:,]'; > > $quoted_string_re = '"[^"]"'; > > $param_value_re = $param_text_re . '\|' . $quoted_string_re; > > $param_re = $name_re . '=' . $param_value_re; > > $old_param_re = '(?:' . $name_re . '=)?(?:[^;]\|(?<=\\\\);)'; > > > > And then run the preg_match like so: > > > > preg_match('/(' . $name_re . ')(;(?:' . $param_re . '\|' . > $old_param_re . ')):([^\r\n])[\r\n]/', > > $attribute, $parts); > > > > This doesn't work unfortunately either, because the regex for the old > format is too greedy. If using an ungreedy modifier, it becomes too > ungreedy. > >
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