There are two problems in block insert mode (<C-V> + I).
1. When CTRL-C is used in block insert mode, text is inserted to first
line only even if multi-line was selected.
For example, when there are three lines and type "1G<C-V>jjIxxx<C-C>"
1: aaa 1: xxxaaa
2: bbb -> 2: bbb
3: ccc 3: ccc
Please see op_insert() function in ops.c. After invoking edit(),
got_int is TRUE when CTRL-C was used. Then u_save() returns FAIL and
block_insert() is not invoked. Thus text is not inserted to other line.
op_insert() in ops.c:
2466 /* block handled here */
2467 if (u_save(oap->start.lnum,
2468 (linenr_T)(oap->end.lnum + 1)) ==
OK)
2469 block_insert(oap, ins_text, (oap->op_type ==
OP_INSERT),
2470
&bd);
u_savecommon() in undo.c:
504 fast_breakcheck();
505 if (got_int)
506 {
507 u_freeentry(uep, i);
508 return FAIL;
509 }
2. When CTRL-C is used in block insert mode, extra undo is added.
This happens when using GUI.
For example, type "<C-V>Ixxx<C-C>" and do undo:
insert undo undo
1: -> 1: xxx -> 1: xxx -> 1:
In CUI:
insert undo
1: -> 1: xxx -> 1:
This is stacktrace explaining how extra undo is added.
#0 u_sync (force=0) at undo.c:1261
#1 0x080c5c02 in may_sync_undo () at getchar.c:1241
#2 0x080c5bb9 in gotchars (s=0x81fa761 "Ixxx\003", len=-1) at getchar.c:1216
#3 0x080c6981 in vgetorpeek (advance=0) at getchar.c:1966
#4 0x080c673f in vpeekc () at getchar.c:1747
#5 0x080c67b5 in char_avail () at getchar.c:1797
#6 0x081030af in update_mouseshape (shape_idx=-1) at misc2.c:3410
#7 0x081920dc in setmouse () at term.c:3322
#8 0x0806c7a4 in ins_esc (count=0xbfbfe308, cmdchar=0, nomove=0)
at edit.c:7781
#9 0x080629e8 in edit (cmdchar=0, startln=0, count=-1) at edit.c:921
#10 0x0811f66e in op_insert (oap=0xbfbfe530, count1=1) at ops.c:2425
#11 0x081108ca in do_pending_operator (cap=0xbfbfe4c0, old_col=0, gui_yank=0)
at normal.c:1985
#12 0x0810f37d in normal_cmd (oap=0xbfbfe530, toplevel=1) at normal.c:1163
#13 0x080d6cf9 in main_loop (cmdwin=0, noexmode=0) at main.c:1154
#14 0x080d685b in main (argc=3, argv=0xbfbfe6fc) at main.c:934
--
Yukihiro Nakadaira - [EMAIL PROTECTED]
