: first-grapheme ( str -- i )
unclip-slice grapheme-class over
[ grapheme-class [ nip ] [ grapheme-break? ] 2bi ] find drop
- nip swap length or 1+ ;
+ nip swap length or 1 + ;
: first-grapheme-from ( start str -- i )
over tail-slice first-grapheme + ;
swap [ format/extended? not ] find-from drop ;
: walk-up ( str i -- j )
- dupd 1+ (walk-up) [ 1+ (walk-up) ] [ drop f ] if* ;
+ dupd 1 + (walk-up) [ 1 + (walk-up) ] [ drop f ] if* ;
: (walk-down) ( str i -- j )
swap [ format/extended? not ] find-last-from drop ;
: walk-down ( str i -- j )
- dupd (walk-down) [ 1- (walk-down) ] [ drop f ] if* ;
+ dupd (walk-down) [ 1 - (walk-down) ] [ drop f ] if* ;
: word-break? ( str i table-entry -- ? )
{
: first-word ( str -- i )
[ unclip-slice word-break-prop over <enum> ] keep
'[ swap _ word-break-next ] assoc-find 2drop
- nip swap length or 1+ ;
+ nip swap length or 1 + ;
: >words ( str -- words )
[ first-word ] >pieces ;
<PRIVATE
: nth-next ( i str -- str[i-1] str[i] )
- [ [ 1- ] keep ] dip '[ _ nth ] bi@ ;
+ [ [ 1 - ] keep ] dip '[ _ nth ] bi@ ;
PRIVATE>