Function countColumn

tools/pythonauto/static/codemirrorepl/codemirrorepl.js:3119–3129

(string, end, tabSize)

    // Counts the column offset in a string, taking tabs into account.
    // Used mostly to find indentation.
    function countColumn(string, end, tabSize) {
        if (end == null) {
            end = string.search(/[^\s\u00a0]/);
            if (end == -1) end = string.length;
        }
        for (var i = 0, n = 0; i < end; ++i) {
            if (string.charAt(i) == "\t") n += tabSize - (n % tabSize);
            else ++n;
        }
        return n;
    }

    function computedStyle(elt) {
        if (elt.currentStyle) return elt.currentStyle;