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33 lines
773 B
JavaScript
33 lines
773 B
JavaScript
/**
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* Convert all tabs to spaces
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*/
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showdown.subParser('detab', function (text) {
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'use strict';
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// expand first n-1 tabs
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text = text.replace(/\t(?=\t)/g, ' '); // g_tab_width
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// replace the nth with two sentinels
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text = text.replace(/\t/g, '~A~B');
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// use the sentinel to anchor our regex so it doesn't explode
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text = text.replace(/~B(.+?)~A/g, function (wholeMatch, m1) {
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var leadingText = m1,
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numSpaces = 4 - leadingText.length % 4; // g_tab_width
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// there *must* be a better way to do this:
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for (var i = 0; i < numSpaces; i++) {
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leadingText += ' ';
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}
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return leadingText;
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});
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// clean up sentinels
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text = text.replace(/~A/g, ' '); // g_tab_width
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text = text.replace(/~B/g, '');
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return text;
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});
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