From: Junio C Hamano Date: Wed, 30 Apr 2014 21:24:24 +0000 (-0700) Subject: CodingGuidelines: give an example for redirection X-Git-Tag: v2.1.0-rc0~151^2~6 X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/6a49909b52b48592234da6a53bfe74ea34c302c6?ds=inline;hp=-c CodingGuidelines: give an example for redirection Signed-off-by: Junio C Hamano --- 6a49909b52b48592234da6a53bfe74ea34c302c6 diff --git a/Documentation/CodingGuidelines b/Documentation/CodingGuidelines index 169b4358c9..11704fb84c 100644 --- a/Documentation/CodingGuidelines +++ b/Documentation/CodingGuidelines @@ -61,6 +61,14 @@ For shell scripts specifically (not exhaustive): redirection target in a variable (as shown above), our code does so because some versions of bash issue a warning without the quotes. + (incorrect) + cat hello > world < universe + echo hello >$world + + (correct) + cat hello >world "$world" + - We prefer $( ... ) for command substitution; unlike ``, it properly nests. It should have been the way Bourne spelled it from day one, but unfortunately isn't.