MDL-5507 filter_mathjaxloader: Add commeents for regexes

2016-07-11 13:22:13 -05:00
parent 0b2b9e21dc
commit 09b3ec720f
1 changed files with 3 additions and 0 deletions
@@ -164,13 +164,16 @@ class filter_mathjaxloader extends moodle_text_filter {
        if ($hasinline || $hasdisplay || $hasextra) {
            $PAGE->requires->yui_module('moodle-filter_mathjaxloader-loader', 'M.filter_mathjaxloader.typeset');
            if ($hasextra) {
+                // If custom dilimeters are used, wrap whole text to prevent autolinking.
                $text = '<span class="nolink">' + $text + '</span>';
            } else {
                if ($hasinline) {
+                    // If the default inline TeX delimiters \( \) are present, wrap each pair in nolink.
                    $text = preg_replace('/\\\\\\([\S\s]*?\\\\\\)/u',
                        '<span class="nolink">\0</span>', $text);
                }
                if ($hasdisplay) {
+                    // If default display TeX is used, wrap $$ $$ or \[ \] individually.
                    $text = preg_replace('/\$\$[\S\s]*?\$\$|\\\\\\[[\S\s]*?\\\\\\]/u',
                        '<span class="nolink">\0</span>', $text);
                }