I've seen a fair number of scripts that use printf's ability to interpret hex and octal arguments. This is often combined with printf's ability to format outputs into decimal, octal, or hex, to make a convenient base-shifter. For this discussion, it's the argument conversion, not the formatting that's relevant...
Working from memory, I've seen patterns such as those below, often in $() (or ` `) expansions. In some cases, the converted number was roundtripped during the lifetime of the script. printf "%u\n" 0377 255 (I've seen this one using both the "unsigned integer" and the various printf(3) integer formatters) printf "%o\n" 0x1b 33 printf "%#o\n" 0x1b 033 printf "%x\n" 77 4d printf "0x%x\n" 77 0x4d printf "%#x\n" 77 0x4d On 2/20/18, enh <e...@google.com> wrote: > On Tue, Feb 20, 2018 at 9:57 AM, Rob Landley <r...@landley.net> wrote: >> On 02/20/2018 11:32 AM, enh wrote: >>> On Tue, Feb 20, 2018 at 9:28 AM, Rob Landley <r...@landley.net> wrote: >>>> A real user piped up and said their existing script doesn't work with my >>>> tool. >>>> That feedback is of interest to me. >>> >>> and as the person who set us down the strtol path >>> (https://github.com/landley/toybox/commit/d5088a059649daf34e729995bb3daa3eb64fa432#diff-ce001a87e82f850a38fd93183e12b417), >>> the original request i had was just for hex. like you say, no-one's >>> used octal (on purpose) for anything other than mode for decades now. >> >> I'm tempted to have atolx() skip leading zeroes, and then base 16 if the >> first >> character is an x and base 10 otherwise. Except supporting the - basically >> means >> open coding the sucker... >> >> Anyway, my _real_ question is, if I'm yanking octal from dd= should I yank >> it >> from everywhere? I still think it's useful for "printf %d 0123" to be able >> to >> cope with it (especially since "printf %o 668" prints 1234). And maybe >> $((0123)) >> needs it too? >> >> No clue where to draw the line on this one. Hmmm... > > you could make it opt-in and add octal support to places where its > absence is actually noticed. > >> Rob > _______________________________________________ > Toybox mailing list > Toybox@lists.landley.net > http://lists.landley.net/listinfo.cgi/toybox-landley.net > _______________________________________________ Toybox mailing list Toybox@lists.landley.net http://lists.landley.net/listinfo.cgi/toybox-landley.net