When compiling Git from source on my Ubuntu machine I've lately been getting some warnings when the docs are built. An example of is: ASCIIDOC git-sh-i18n--envsubst.html <unknown>:1: SyntaxWarning: invalid escape sequence '\S' <unknown>:1: SyntaxWarning: invalid escape sequence '\S' This syntax warning shows up for nearly every man page or html file. Is there are current documented solution? If there isn't a documented solution, where do I start looking and I will craft a patch and submit it. Thanks