Re: [PATCH] date: accept 'hence' as opposite of 'ago'

[Jim Meyering]

Eric Blake wrote:
> +     date: accept 'hence' as opposite of 'ago'
> +     * lib/parse-datetime.y (relative_time_table): Add 'hence'.
> +     * tests/test-parse-datetime.c (main): Enhance test.
> +     Suggested by Jesse Wilson.
...
> diff --git a/lib/parse-datetime.y b/lib/parse-datetime.y
> index 33ef01a..d99c955 100644
> --- a/lib/parse-datetime.y
> +++ b/lib/parse-datetime.y
> @@ -296,7 +296,8 @@ set_hhmmss (parser_control *pc, long int hour, long int 
> minutes,
>    relative_time rel;
>  }
>
> -%token tAGO tDST
> +%token <intval> tAGO
> +%token tDST
>
>  %token tYEAR_UNIT tMONTH_UNIT tHOUR_UNIT tMINUTE_UNIT tSEC_UNIT
>  %token <intval> tDAY_UNIT tDAY_SHIFT
> @@ -544,7 +545,7 @@ iso_8601_date:
>
>  rel:
>      relunit tAGO
> -      { apply_relative_time (pc, $1, -1); }
> +      { apply_relative_time (pc, $1, $2); }
>    | relunit
>        { apply_relative_time (pc, $1, 1); }
>    | dayshift
> @@ -733,7 +734,8 @@ static table const relative_time_table[] =
>    { "TENTH",    tORDINAL,       10 },
>    { "ELEVENTH", tORDINAL,       11 },
>    { "TWELFTH",  tORDINAL,       12 },
> -  { "AGO",      tAGO,            1 },
> +  { "AGO",      tAGO,           -1 },
> +  { "HENCE",    tAGO,            1 },

I like the addition, too, and your patch looks fine.
Thanks to both of you.