[ABAP] Strings durchsuchen

DATA: f TYPE string VALUE 'TEST_TEST',
      g TYPE string VALUE 'ST',
      res TYPE match_result_tab.

FIELD-SYMBOLS <match> LIKE LINE OF res.

FIND ALL OCCURRENCES OF g IN f RESULTS res. " Zeichenfolge g in f suchen, Ergebnisausgabe in res

LOOP AT res ASSIGNING <match>. 
  WRITE: / 'offset: ', <match>-offset, 'length: ', <match>-length.
ENDLOOP.

IF sy-subrc EQ 0.
  ... " f enthält g
ENDIF.