abbrev

>>-abbrev(info-+---------+-)-----------------------------------><
               +-,length-+

Returns 1 if [info] is equal to the leading characters of the receiving string and the length of [info] is not less than [length] . Returns 0 if either of these conditions is not met.

If you specify [length] , it must be a positive whole number or zero. The default for [length] is the number of characters in [info] .

String class - abbrev method

"Print"~abbrev("Pri")      ->    1
"PRINT"~abbrev("Pri")      ->    0
"PRINT"~abbrev("PRI",4)    ->    0
"PRINT"~abbrev("PRY")      ->    0
"PRINT"~abbrev("")         ->    1
"PRINT"~abbrev("",1)       ->    0

Note

A null string always matches if a length of 0, or the default, is used. This allows a default keyword to be selected automatically if desired.

String class - abbrev method

say "Enter option:";   pull option .
select  /* keyword1 is to be the default */
  when "keyword1"~abbrev(option) then ...
  when "keyword2"~abbrev(option) then ...
  ...
  otherwise nop;
end;