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lang-bash
csh, you'd rather use$var:qthan"$var"as the latter doesn't work for variables that contain newline characters (or if you want to quote the elements of the array individually, rather than join them with spaces into a single argument).bitrate="--bitrate 320"works with${bitrate:+$bitrate}, andbitrate=--bitrate 128won't work${bitrate:+"$bitrate"}because it breaks the command. Is is safe to use${variable:+$variable}with no"?$@for something else), or you simply refuse to use an array for other reasons, I refer you to “As discussed in the other answer”. … (Cont’d)${variable:+$variable}with no") will fail if IFS contains-,0,2,3,a,b,e,i,rort.