WHILE <RESULT_FIELDS>-/bic/zcgpp ca CL_ABAP_CHAR_UTILITIES=>HORIZONTAL_TAB.
clear <RESULT_FIELDS>-/bic/zcgpp+sy-fdpos(1).
endwhile.
WHILE <RESULT_FIELDS>-/bic/zcgpp ca CL_ABAP_CHAR_UTILITIES=>VERTICAL_TAB.
clear <RESULT_FIELDS>-/bic/zcgpp+sy-fdpos(1).
endwhile.
WHILE <RESULT_FIELDS>-/bic/zcgpp ca CL_ABAP_CHAR_UTILITIES=>NEWLINE.
clear <RESULT_FIELDS>-/bic/zcgpp+sy-fdpos(1).
endwhile.
WHILE <RESULT_FIELDS>-/bic/zcgpp ca CL_ABAP_CHAR_UTILITIES=>CR_LF.
clear <RESULT_FIELDS>-/bic/zcgpp+sy-fdpos(1).
endwhile.
WHILE <RESULT_FIELDS>-/bic/zcgpp ca CL_ABAP_CHAR_UTILITIES=>FORM_FEED.
clear <RESULT_FIELDS>-/bic/zcgpp+sy-fdpos(1).
endwhile.
endloop.
cl_abap_char_utilities=>horizontal_tab — 09 TAB符
cl_abap_char_utilities=>CR_LF ———-－ 0D0A 回车换行
cl_abap_char_utilities=>VERTICAL_TAB —－ 0B 垂直制表符
cl_abap_char_utilities=>NEWLINE —-－－－ 0A 换行
cl_abap_char_utilities=>FORM_FEED —-－－ 0C 换页
cl_abap_char_utilities=>BACKSPACE —－－－08 退格符
CL_ABAP_CHAR_UTILITIES=>BYTE_ORDER_MARK_LITTLE-----(utf-16le')的文件头
CL_ABAP_CHAR_UTILITIES=>BYTE_ORDER_MARK_UTF8-------(utf-8)的文件头
如果是要单独取得回车或者换行（不是回车加换行），可以采用：
cl_abap_char_utilities=>CR_LF(1)
cl_abap_char_utilities=>CR_LF 1(1)