diff options
Diffstat (limited to 'lib/kernel')
| -rw-r--r-- | lib/kernel/src/group.erl | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/lib/kernel/src/group.erl b/lib/kernel/src/group.erl index a45ba34eae..b770ab8386 100644 --- a/lib/kernel/src/group.erl +++ b/lib/kernel/src/group.erl @@ -477,15 +477,15 @@ get_line(Chars, Pbs, Drv, Encoding) -> get_line1(edlin:edit_line(Chars, Cont), Drv, new_stack(get(line_buffer)), Encoding). -get_line1({done,Line,Rest,Rs}, Drv, _Ls, _Encoding) -> +get_line1({done,Line,Rest,Rs}, Drv, Ls, _Encoding) -> send_drv_reqs(Drv, Rs), - put(line_buffer, [Line|lists:delete(Line, get(line_buffer))]), + save_line_buffer(Line, get_lines(Ls)), {done,Line,Rest}; get_line1({undefined,{_A,Mode,Char},Cs,Cont,Rs}, Drv, Ls0, Encoding) when ((Mode =:= none) and (Char =:= $\^P)) or ((Mode =:= meta_left_sq_bracket) and (Char =:= $A)) -> send_drv_reqs(Drv, Rs), - case up_stack(Ls0) of + case up_stack(save_line(Ls0, edlin:current_line(Cont))) of {none,_Ls} -> send_drv(Drv, beep), get_line1(edlin:edit_line(Cs, Cont), Drv, Ls0, Encoding); @@ -498,14 +498,14 @@ get_line1({undefined,{_A,Mode,Char},Cs,Cont,Rs}, Drv, Ls0, Encoding) Drv, Ls, Encoding) end; -get_line1({undefined,{_A,Mode,Char},_Cs,Cont,Rs}, Drv, Ls0, Encoding) +get_line1({undefined,{_A,Mode,Char},Cs,Cont,Rs}, Drv, Ls0, Encoding) when ((Mode =:= none) and (Char =:= $\^N)) or ((Mode =:= meta_left_sq_bracket) and (Char =:= $B)) -> send_drv_reqs(Drv, Rs), - case down_stack(Ls0) of - {none,Ls} -> - send_drv_reqs(Drv, edlin:erase_line(Cont)), - get_line1(edlin:start(edlin:prompt(Cont)), Drv, Ls, Encoding); + case down_stack(save_line(Ls0, edlin:current_line(Cont))) of + {none,_Ls} -> + send_drv(Drv, beep), + get_line1(edlin:edit_line(Cs, Cont), Drv, Ls0, Encoding); {Lcs,Ls} -> send_drv_reqs(Drv, edlin:erase_line(Cont)), {more_chars,Ncont,Nrs} = edlin:start(edlin:prompt(Cont)), @@ -627,6 +627,28 @@ down_stack({stack,U,{},[]}) -> down_stack({stack,U,C,D}) -> down_stack({stack,[C|U],{},D}). +save_line({stack, U, {}, []}, Line) -> + {stack, U, {}, [Line]}; +save_line({stack, U, _L, D}, Line) -> + {stack, U, Line, D}. + +get_lines({stack, U, {}, []}) -> + U; +get_lines({stack, U, {}, D}) -> + tl(lists:reverse(D, U)); +get_lines({stack, U, L, D}) -> + get_lines({stack, U, {}, [L|D]}). + +save_line_buffer("\n", Lines) -> + save_line_buffer(Lines); +save_line_buffer(Line, [Line|_Lines]=Lines) -> + save_line_buffer(Lines); +save_line_buffer(Line, Lines) -> + save_line_buffer([Line|Lines]). + +save_line_buffer(Lines) -> + put(line_buffer, Lines). + %% This is get_line without line editing (except for backspace) and %% without echo. get_password_line(Chars, Drv) -> |