this was the du patch. the documentation of the BSD function is
https://www.freebsd.org/cgi/man.cgi?query=humanize_number&sektion=3&n=1
and even just between dd and du a fair number of those flags are used.
i didn't know whether you'd prefer i fix all the -h'es (and add the
missing ones) or just worry about them one at a time. i guess i should
have just gone ahead and looked at df and ls in the meantime :-)

On Wed, Nov 26, 2014 at 12:48 PM, enh <[email protected]> wrote:
> Different tools have different ideas about what human-readable output
> looks like. dd uses "7 MB" where du uses "7M", for example. this patch
> adds flags, similar to the BSD humanize_number. most callers will pass
> 0.
>
> diff --git a/lib/lib.c b/lib/lib.c
> index 5923176..578f99a 100644
> --- a/lib/lib.c
> +++ b/lib/lib.c
> @@ -831,7 +831,7 @@ void names_to_pid(char **names, int
> (*callback)(pid_t pid, char *name))
>
>  // display first few digits of number with power of two units, except we're
>  // actually just counting decimal digits and showing mil/bil/trillions.
> -int human_readable(char *buf, unsigned long long num)
> +int human_readable(char *buf, unsigned long long num, int style)
>  {
>    int end, len;
>
> @@ -844,9 +844,9 @@ int human_readable(char *buf, unsigned long long num)
>      buf[1] = '.';
>      end = 3;
>    }
> -  buf[end++] = ' ';
> +  if (style & HR_SPACE) buf[end++] = ' ';
>    if (len) buf[end++] = " KMGTPE"[len];
> -  buf[end++] = 'B';
> +  if (style & HR_B) buf[end++] = 'B';
>    buf[end++] = 0;
>
>    return end;
> diff --git a/lib/lib.h b/lib/lib.h
> index 49b02bb..e3baec4 100644
> --- a/lib/lib.h
> +++ b/lib/lib.h
> @@ -168,7 +168,9 @@ void replace_tempfile(int fdin, int fdout, char 
> **tempname);
>  void crc_init(unsigned int *crc_table, int little_endian);
>  int terminal_size(unsigned *x, unsigned *y);
>  int yesno(char *prompt, int def);
> -int human_readable(char *buf, unsigned long long num);
> +#define HR_SPACE 1
> +#define HR_B 2
> +int human_readable(char *buf, unsigned long long num, int style);
>
>  // net.c
>  int xsocket(int domain, int type, int protocol);
> diff --git a/toys/pending/dd.c b/toys/pending/dd.c
> index a5c2452..202fb4b 100644
> --- a/toys/pending/dd.c
> +++ b/toys/pending/dd.c
> @@ -133,9 +133,9 @@ static void summary()
>    //out to STDERR
>    fprintf(stderr,"%llu+%llu records in\n%llu+%llu records out\n",
> st.in_full, st.in_part,
>        st.out_full, st.out_part);
> -  human_readable(toybuf, st.bytes);
> +  human_readable(toybuf, st.bytes, HR_SPACE|HR_B);
>    fprintf(stderr, "%llu bytes (%s) copied,",st.bytes, toybuf);
> -  human_readable(toybuf, st.bytes/seconds);
> +  human_readable(toybuf, st.bytes/seconds, HR_SPACE|HR_B);
>    fprintf(stderr, "%f seconds, %s/s\n", seconds, toybuf);
>  }
>
> diff --git a/toys/posix/du.c b/toys/posix/du.c
> index 22a26d3..9d537a1 100644
> --- a/toys/posix/du.c
> +++ b/toys/posix/du.c
> @@ -55,7 +55,7 @@ static void print(long long size, struct dirtree *node)
>    if (TT.maxdepth && TT.depth > TT.maxdepth) return;
>
>    if (toys.optflags & FLAG_h) {
> -    human_readable(toybuf, size);
> +    human_readable(toybuf, size, 0);
>      printf("%s", toybuf);
>    } else {
>      int bits = 10;
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