Function forward

lib/web/CodeMirror/keymap/vim.js:3835–3891

(cm, ln, pos, dir)

        Returns an index object of the new location
       */
      function forward(cm, ln, pos, dir) {
        var line = cm.getLine(ln);
        var stop = (line === "");

        var curr = {
          line: line,
          ln: ln,
          pos: pos,
          dir: dir,
        }

        var last_valid = {
          ln: curr.ln,
          pos: curr.pos,
        }

        var skip_empty_lines = (curr.line === "");

        // Move one step to skip character we start on
        nextChar(cm, curr);

        while (curr.line !== null) {
          last_valid.ln = curr.ln;
          last_valid.pos = curr.pos;

          if (curr.line === "" && !skip_empty_lines) {
            return { ln: curr.ln, pos: curr.pos, };
          }
          else if (stop && curr.line !== "" && !isWhiteSpaceString(curr.line[curr.pos])) {
            return { ln: curr.ln, pos: curr.pos, };
          }
          else if (isEndOfSentenceSymbol(curr.line[curr.pos])
            && !stop
            && (curr.pos === curr.line.length - 1
              || isWhiteSpaceString(curr.line[curr.pos + 1]))) {
            stop = true;
          }

          nextChar(cm, curr);
        }

        /*
          Set the position to the last non whitespace character on the last
          valid line in the case that we reach the end of the document.
        */
        var line = cm.getLine(last_valid.ln);
        last_valid.pos = 0;
        for(var i = line.length - 1; i >= 0; --i) {
          if (!isWhiteSpaceString(line[i])) {
            last_valid.pos = i;
            break;
          }
        }

        return last_valid;

      }