Do you love the multi-line progress bar when knitting a document? You probably don’t. Neither do I. It’s too verbose and clutters the console with too much information that often has too little real benefit. The information is intended for debugging, but as a debugging champion, you only need to know the error message, right? Why should knitr let you know the information from a hundred other code chunks when the error comes from only one chunk? Worse still, as a programming champion, you never run into errors and always watch the progress bar go from 0% to 100% …