Fix #1100: respect knitr's chunk option 'dev' if it has been set #1140
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by default, dev = NULL in knitr's opts_chunk; for markdown output, knitr will check if the png device is usable in knitr:::set_html_dev and set dev = 'png' if it is, otherwise knitr uses 'svg' as the default device, which does not depend on X11
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By default,
dev = NULLin knitr'sopts_chunk; for markdown output, knitr will check if thepngdevice is usable inknitr:::set_html_devand setdev = 'png'if it is, otherwise knitr uses'svg'as the default device, which does not depend on X11.This should be a low-risk change since it should be rare that
pngis not usable.Probably not worth a NEWS entry.