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edit.c
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/* vi:set ts=8 sts=4 sw=4 noet:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* edit.c: functions for Insert mode
*/
#include "vim.h"
#define BACKSPACE_CHAR 1
#define BACKSPACE_WORD 2
#define BACKSPACE_WORD_NOT_SPACE 3
#define BACKSPACE_LINE 4
// Set when doing something for completion that may call edit() recursively,
// which is not allowed.
static int compl_busy = FALSE;
static void ins_ctrl_v(void);
#ifdef FEAT_JOB_CHANNEL
static void init_prompt(int cmdchar_todo);
#endif
static void insert_special(int, int, int);
static void redo_literal(int c);
static void start_arrow_common(pos_T *end_insert_pos, int change);
#ifdef FEAT_SPELL
static void check_spell_redraw(void);
#endif
static void stop_insert(pos_T *end_insert_pos, int esc, int nomove);
static int echeck_abbr(int);
static void mb_replace_pop_ins(int cc);
static void replace_flush(void);
static void replace_do_bs(int limit_col);
static int del_char_after_col(int limit_col);
static void ins_reg(void);
static void ins_ctrl_g(void);
static void ins_ctrl_hat(void);
static int ins_esc(long *count, int cmdchar, int nomove);
#ifdef FEAT_RIGHTLEFT
static void ins_ctrl_(void);
#endif
static int ins_start_select(int c);
static void ins_insert(int replaceState);
static void ins_ctrl_o(void);
static void ins_shift(int c, int lastc);
static void ins_del(void);
static int ins_bs(int c, int mode, int *inserted_space_p);
#if defined(FEAT_GUI_TABLINE) || defined(PROTO)
static void ins_tabline(int c);
#endif
static void ins_left(void);
static void ins_home(int c);
static void ins_end(int c);
static void ins_s_left(void);
static void ins_right(void);
static void ins_s_right(void);
static void ins_up(int startcol);
static void ins_pageup(void);
static void ins_down(int startcol);
static void ins_pagedown(void);
#ifdef FEAT_DND
static void ins_drop(void);
#endif
static int ins_tab(void);
#ifdef FEAT_DIGRAPHS
static int ins_digraph(void);
#endif
static int ins_ctrl_ey(int tc);
#if defined(FEAT_EVAL)
static char_u *do_insert_char_pre(int c);
#endif
static colnr_T Insstart_textlen; // length of line when insert started
static colnr_T Insstart_blank_vcol; // vcol for first inserted blank
static int update_Insstart_orig = TRUE; // set Insstart_orig to Insstart
static char_u *last_insert = NULL; // the text of the previous insert,
// K_SPECIAL and CSI are escaped
static int last_insert_skip; // nr of chars in front of previous insert
static int new_insert_skip; // nr of chars in front of current insert
static int did_restart_edit; // "restart_edit" when calling edit()
#ifdef FEAT_CINDENT
static int can_cindent; // may do cindenting on this line
#endif
#ifdef FEAT_RIGHTLEFT
static int revins_on; // reverse insert mode on
static int revins_chars; // how much to skip after edit
static int revins_legal; // was the last char 'legal'?
static int revins_scol; // start column of revins session
#endif
static int ins_need_undo; // call u_save() before inserting a
// char. Set when edit() is called.
// after that arrow_used is used.
static int dont_sync_undo = FALSE; // CTRL-G U prevents syncing undo for
// the next left/right cursor key
/*
* edit(): Start inserting text.
*
* "cmdchar" can be:
* 'i' normal insert command
* 'a' normal append command
* K_PS bracketed paste
* 'R' replace command
* 'r' "r<CR>" command: insert one <CR>. Note: count can be > 1, for redo,
* but still only one <CR> is inserted. The <Esc> is not used for redo.
* 'g' "gI" command.
* 'V' "gR" command for Virtual Replace mode.
* 'v' "gr" command for single character Virtual Replace mode.
*
* This function is not called recursively. For CTRL-O commands, it returns
* and lets the caller handle the Normal-mode command.
*
* Return TRUE if a CTRL-O command caused the return (insert mode pending).
*/
int
edit(
int cmdchar,
int startln, // if set, insert at start of line
long count)
{
int c = 0;
char_u *ptr;
int lastc = 0;
int mincol;
static linenr_T o_lnum = 0;
int i;
int did_backspace = TRUE; // previous char was backspace
#ifdef FEAT_CINDENT
int line_is_white = FALSE; // line is empty before insert
#endif
linenr_T old_topline = 0; // topline before insertion
#ifdef FEAT_DIFF
int old_topfill = -1;
#endif
int inserted_space = FALSE; // just inserted a space
int replaceState = REPLACE;
int nomove = FALSE; // don't move cursor on return
#ifdef FEAT_JOB_CHANNEL
int cmdchar_todo = cmdchar;
#endif
// Remember whether editing was restarted after CTRL-O.
did_restart_edit = restart_edit;
// sleep before redrawing, needed for "CTRL-O :" that results in an
// error message
check_for_delay(TRUE);
// set Insstart_orig to Insstart
update_Insstart_orig = TRUE;
#ifdef HAVE_SANDBOX
// Don't allow inserting in the sandbox.
if (sandbox != 0)
{
emsg(_(e_sandbox));
return FALSE;
}
#endif
// Don't allow changes in the buffer while editing the cmdline. The
// caller of getcmdline() may get confused.
// Don't allow recursive insert mode when busy with completion.
if (textwinlock != 0 || textlock != 0
|| ins_compl_active() || compl_busy || pum_visible())
{
emsg(_(e_textwinlock));
return FALSE;
}
ins_compl_clear(); // clear stuff for CTRL-X mode
/*
* Trigger InsertEnter autocommands. Do not do this for "r<CR>" or "grx".
*/
if (cmdchar != 'r' && cmdchar != 'v')
{
pos_T save_cursor = curwin->w_cursor;
#ifdef FEAT_EVAL
if (cmdchar == 'R')
ptr = (char_u *)"r";
else if (cmdchar == 'V')
ptr = (char_u *)"v";
else
ptr = (char_u *)"i";
set_vim_var_string(VV_INSERTMODE, ptr, 1);
set_vim_var_string(VV_CHAR, NULL, -1); // clear v:char
#endif
ins_apply_autocmds(EVENT_INSERTENTER);
// Make sure the cursor didn't move. Do call check_cursor_col() in
// case the text was modified. Since Insert mode was not started yet
// a call to check_cursor_col() may move the cursor, especially with
// the "A" command, thus set State to avoid that. Also check that the
// line number is still valid (lines may have been deleted).
// Do not restore if v:char was set to a non-empty string.
if (!EQUAL_POS(curwin->w_cursor, save_cursor)
#ifdef FEAT_EVAL
&& *get_vim_var_str(VV_CHAR) == NUL
#endif
&& save_cursor.lnum <= curbuf->b_ml.ml_line_count)
{
int save_state = State;
curwin->w_cursor = save_cursor;
State = INSERT;
check_cursor_col();
State = save_state;
}
}
#ifdef FEAT_CONCEAL
// Check if the cursor line needs redrawing before changing State. If
// 'concealcursor' is "n" it needs to be redrawn without concealing.
conceal_check_cursor_line();
#endif
/*
* When doing a paste with the middle mouse button, Insstart is set to
* where the paste started.
*/
if (where_paste_started.lnum != 0)
Insstart = where_paste_started;
else
{
Insstart = curwin->w_cursor;
if (startln)
Insstart.col = 0;
}
Insstart_textlen = (colnr_T)linetabsize(ml_get_curline());
Insstart_blank_vcol = MAXCOL;
if (!did_ai)
ai_col = 0;
if (cmdchar != NUL && restart_edit == 0)
{
ResetRedobuff();
AppendNumberToRedobuff(count);
if (cmdchar == 'V' || cmdchar == 'v')
{
// "gR" or "gr" command
AppendCharToRedobuff('g');
AppendCharToRedobuff((cmdchar == 'v') ? 'r' : 'R');
}
else
{
if (cmdchar == K_PS)
AppendCharToRedobuff('a');
else
AppendCharToRedobuff(cmdchar);
if (cmdchar == 'g') // "gI" command
AppendCharToRedobuff('I');
else if (cmdchar == 'r') // "r<CR>" command
count = 1; // insert only one <CR>
}
}
if (cmdchar == 'R')
{
State = REPLACE;
}
else if (cmdchar == 'V' || cmdchar == 'v')
{
State = VREPLACE;
replaceState = VREPLACE;
orig_line_count = curbuf->b_ml.ml_line_count;
vr_lines_changed = 1;
}
else
State = INSERT;
stop_insert_mode = FALSE;
/*
* Need to recompute the cursor position, it might move when the cursor is
* on a TAB or special character.
*/
curs_columns(TRUE);
/*
* Enable langmap or IME, indicated by 'iminsert'.
* Note that IME may enabled/disabled without us noticing here, thus the
* 'iminsert' value may not reflect what is actually used. It is updated
* when hitting <Esc>.
*/
if (curbuf->b_p_iminsert == B_IMODE_LMAP)
State |= LANGMAP;
#ifdef HAVE_INPUT_METHOD
im_set_active(curbuf->b_p_iminsert == B_IMODE_IM);
#endif
setmouse();
#ifdef FEAT_CMDL_INFO
clear_showcmd();
#endif
#ifdef FEAT_RIGHTLEFT
// there is no reverse replace mode
revins_on = (State == INSERT && p_ri);
if (revins_on)
undisplay_dollar();
revins_chars = 0;
revins_legal = 0;
revins_scol = -1;
#endif
if (!p_ek)
{
// Disable bracketed paste mode, we won't recognize the escape
// sequences.
out_str(T_BD);
// Disable modifyOtherKeys, keys with modifiers would cause exiting
// Insert mode.
out_str(T_CTE);
}
/*
* Handle restarting Insert mode.
* Don't do this for "CTRL-O ." (repeat an insert): In that case we get
* here with something in the stuff buffer.
*/
if (restart_edit != 0 && stuff_empty())
{
/*
* After a paste we consider text typed to be part of the insert for
* the pasted text. You can backspace over the pasted text too.
*/
if (where_paste_started.lnum)
arrow_used = FALSE;
else
arrow_used = TRUE;
restart_edit = 0;
/*
* If the cursor was after the end-of-line before the CTRL-O and it is
* now at the end-of-line, put it after the end-of-line (this is not
* correct in very rare cases).
* Also do this if curswant is greater than the current virtual
* column. Eg after "^O$" or "^O80|".
*/
validate_virtcol();
update_curswant();
if (((ins_at_eol && curwin->w_cursor.lnum == o_lnum)
|| curwin->w_curswant > curwin->w_virtcol)
&& *(ptr = ml_get_curline() + curwin->w_cursor.col) != NUL)
{
if (ptr[1] == NUL)
++curwin->w_cursor.col;
else if (has_mbyte)
{
i = (*mb_ptr2len)(ptr);
if (ptr[i] == NUL)
curwin->w_cursor.col += i;
}
}
ins_at_eol = FALSE;
}
else
arrow_used = FALSE;
// we are in insert mode now, don't need to start it anymore
need_start_insertmode = FALSE;
// Need to save the line for undo before inserting the first char.
ins_need_undo = TRUE;
where_paste_started.lnum = 0;
#ifdef FEAT_CINDENT
can_cindent = TRUE;
#endif
#ifdef FEAT_FOLDING
// The cursor line is not in a closed fold, unless 'insertmode' is set or
// restarting.
if (!p_im && did_restart_edit == 0)
foldOpenCursor();
#endif
/*
* If 'showmode' is set, show the current (insert/replace/..) mode.
* A warning message for changing a readonly file is given here, before
* actually changing anything. It's put after the mode, if any.
*/
i = 0;
if (p_smd && msg_silent == 0)
i = showmode();
if (!p_im && did_restart_edit == 0)
change_warning(i == 0 ? 0 : i + 1);
#ifdef CURSOR_SHAPE
ui_cursor_shape(); // may show different cursor shape
#endif
#ifdef FEAT_DIGRAPHS
do_digraph(-1); // clear digraphs
#endif
/*
* Get the current length of the redo buffer, those characters have to be
* skipped if we want to get to the inserted characters.
*/
ptr = get_inserted();
if (ptr == NULL)
new_insert_skip = 0;
else
{
new_insert_skip = (int)STRLEN(ptr);
vim_free(ptr);
}
old_indent = 0;
/*
* Main loop in Insert mode: repeat until Insert mode is left.
*/
for (;;)
{
#ifdef FEAT_RIGHTLEFT
if (!revins_legal)
revins_scol = -1; // reset on illegal motions
else
revins_legal = 0;
#endif
if (arrow_used) // don't repeat insert when arrow key used
count = 0;
if (update_Insstart_orig)
Insstart_orig = Insstart;
if (stop_insert_mode && !pum_visible())
{
// ":stopinsert" used or 'insertmode' reset
count = 0;
goto doESCkey;
}
// set curwin->w_curswant for next K_DOWN or K_UP
if (!arrow_used)
curwin->w_set_curswant = TRUE;
// If there is no typeahead may check for timestamps (e.g., for when a
// menu invoked a shell command).
if (stuff_empty())
{
did_check_timestamps = FALSE;
if (need_check_timestamps)
check_timestamps(FALSE);
}
/*
* When emsg() was called msg_scroll will have been set.
*/
msg_scroll = FALSE;
#ifdef FEAT_GUI
// When 'mousefocus' is set a mouse movement may have taken us to
// another window. "need_mouse_correct" may then be set because of an
// autocommand.
if (need_mouse_correct)
gui_mouse_correct();
#endif
#ifdef FEAT_FOLDING
// Open fold at the cursor line, according to 'foldopen'.
if (fdo_flags & FDO_INSERT)
foldOpenCursor();
// Close folds where the cursor isn't, according to 'foldclose'
if (!char_avail())
foldCheckClose();
#endif
#ifdef FEAT_JOB_CHANNEL
if (bt_prompt(curbuf))
{
init_prompt(cmdchar_todo);
cmdchar_todo = NUL;
}
#endif
/*
* If we inserted a character at the last position of the last line in
* the window, scroll the window one line up. This avoids an extra
* redraw.
* This is detected when the cursor column is smaller after inserting
* something.
* Don't do this when the topline changed already, it has
* already been adjusted (by insertchar() calling open_line())).
*/
if (curbuf->b_mod_set
&& curwin->w_p_wrap
&& !did_backspace
&& curwin->w_topline == old_topline
#ifdef FEAT_DIFF
&& curwin->w_topfill == old_topfill
#endif
)
{
mincol = curwin->w_wcol;
validate_cursor_col();
if (
#ifdef FEAT_VARTABS
(int)curwin->w_wcol < mincol - tabstop_at(
get_nolist_virtcol(), curbuf->b_p_ts,
curbuf->b_p_vts_array)
#else
(int)curwin->w_wcol < mincol - curbuf->b_p_ts
#endif
&& curwin->w_wrow == W_WINROW(curwin)
+ curwin->w_height - 1 - get_scrolloff_value()
&& (curwin->w_cursor.lnum != curwin->w_topline
#ifdef FEAT_DIFF
|| curwin->w_topfill > 0
#endif
))
{
#ifdef FEAT_DIFF
if (curwin->w_topfill > 0)
--curwin->w_topfill;
else
#endif
#ifdef FEAT_FOLDING
if (hasFolding(curwin->w_topline, NULL, &old_topline))
set_topline(curwin, old_topline + 1);
else
#endif
set_topline(curwin, curwin->w_topline + 1);
}
}
// May need to adjust w_topline to show the cursor.
update_topline();
did_backspace = FALSE;
validate_cursor(); // may set must_redraw
/*
* Redraw the display when no characters are waiting.
* Also shows mode, ruler and positions cursor.
*/
ins_redraw(TRUE);
if (curwin->w_p_scb)
do_check_scrollbind(TRUE);
if (curwin->w_p_crb)
do_check_cursorbind();
update_curswant();
old_topline = curwin->w_topline;
#ifdef FEAT_DIFF
old_topfill = curwin->w_topfill;
#endif
#ifdef USE_ON_FLY_SCROLL
dont_scroll = FALSE; // allow scrolling here
#endif
/*
* Get a character for Insert mode. Ignore K_IGNORE and K_NOP.
*/
if (c != K_CURSORHOLD)
lastc = c; // remember the previous char for CTRL-D
// After using CTRL-G U the next cursor key will not break undo.
if (dont_sync_undo == MAYBE)
dont_sync_undo = TRUE;
else
dont_sync_undo = FALSE;
if (cmdchar == K_PS)
// Got here from normal mode when bracketed paste started.
c = K_PS;
else
do
{
c = safe_vgetc();
if (stop_insert_mode)
{
// Insert mode ended, possibly from a callback.
count = 0;
nomove = TRUE;
goto doESCkey;
}
} while (c == K_IGNORE || c == K_NOP);
// Don't want K_CURSORHOLD for the second key, e.g., after CTRL-V.
did_cursorhold = TRUE;
#ifdef FEAT_RIGHTLEFT
if (p_hkmap && KeyTyped)
c = hkmap(c); // Hebrew mode mapping
#endif
/*
* Special handling of keys while the popup menu is visible or wanted
* and the cursor is still in the completed word. Only when there is
* a match, skip this when no matches were found.
*/
if (ins_compl_active()
&& pum_wanted()
&& curwin->w_cursor.col >= ins_compl_col()
&& ins_compl_has_shown_match())
{
// BS: Delete one character from "compl_leader".
if ((c == K_BS || c == Ctrl_H)
&& curwin->w_cursor.col > ins_compl_col()
&& (c = ins_compl_bs()) == NUL)
continue;
// When no match was selected or it was edited.
if (!ins_compl_used_match())
{
// CTRL-L: Add one character from the current match to
// "compl_leader". Except when at the original match and
// there is nothing to add, CTRL-L works like CTRL-P then.
if (c == Ctrl_L
&& (!ctrl_x_mode_line_or_eval()
|| ins_compl_long_shown_match()))
{
ins_compl_addfrommatch();
continue;
}
// A non-white character that fits in with the current
// completion: Add to "compl_leader".
if (ins_compl_accept_char(c))
{
#if defined(FEAT_EVAL)
// Trigger InsertCharPre.
char_u *str = do_insert_char_pre(c);
char_u *p;
if (str != NULL)
{
for (p = str; *p != NUL; MB_PTR_ADV(p))
ins_compl_addleader(PTR2CHAR(p));
vim_free(str);
}
else
#endif
ins_compl_addleader(c);
continue;
}
// Pressing CTRL-Y selects the current match. When
// ins_compl_enter_selects() is set the Enter key does the
// same.
if ((c == Ctrl_Y || (ins_compl_enter_selects()
&& (c == CAR || c == K_KENTER || c == NL)))
&& stop_arrow() == OK)
{
ins_compl_delete();
ins_compl_insert(FALSE);
}
}
}
// Prepare for or stop CTRL-X mode. This doesn't do completion, but
// it does fix up the text when finishing completion.
ins_compl_init_get_longest();
if (ins_compl_prep(c))
continue;
// CTRL-\ CTRL-N goes to Normal mode,
// CTRL-\ CTRL-G goes to mode selected with 'insertmode',
// CTRL-\ CTRL-O is like CTRL-O but without moving the cursor.
if (c == Ctrl_BSL)
{
// may need to redraw when no more chars available now
ins_redraw(FALSE);
++no_mapping;
++allow_keys;
c = plain_vgetc();
--no_mapping;
--allow_keys;
if (c != Ctrl_N && c != Ctrl_G && c != Ctrl_O)
{
// it's something else
vungetc(c);
c = Ctrl_BSL;
}
else if (c == Ctrl_G && p_im)
continue;
else
{
if (c == Ctrl_O)
{
ins_ctrl_o();
ins_at_eol = FALSE; // cursor keeps its column
nomove = TRUE;
}
count = 0;
goto doESCkey;
}
}
#ifdef FEAT_DIGRAPHS
c = do_digraph(c);
#endif
if ((c == Ctrl_V || c == Ctrl_Q) && ctrl_x_mode_cmdline())
goto docomplete;
if (c == Ctrl_V || c == Ctrl_Q)
{
ins_ctrl_v();
c = Ctrl_V; // pretend CTRL-V is last typed character
continue;
}
#ifdef FEAT_CINDENT
if (cindent_on() && ctrl_x_mode_none())
{
// A key name preceded by a bang means this key is not to be
// inserted. Skip ahead to the re-indenting below.
// A key name preceded by a star means that indenting has to be
// done before inserting the key.
line_is_white = inindent(0);
if (in_cinkeys(c, '!', line_is_white))
goto force_cindent;
if (can_cindent && in_cinkeys(c, '*', line_is_white)
&& stop_arrow() == OK)
do_c_expr_indent();
}
#endif
#ifdef FEAT_RIGHTLEFT
if (curwin->w_p_rl)
switch (c)
{
case K_LEFT: c = K_RIGHT; break;
case K_S_LEFT: c = K_S_RIGHT; break;
case K_C_LEFT: c = K_C_RIGHT; break;
case K_RIGHT: c = K_LEFT; break;
case K_S_RIGHT: c = K_S_LEFT; break;
case K_C_RIGHT: c = K_C_LEFT; break;
}
#endif
/*
* If 'keymodel' contains "startsel", may start selection. If it
* does, a CTRL-O and c will be stuffed, we need to get these
* characters.
*/
if (ins_start_select(c))
continue;
/*
* The big switch to handle a character in insert mode.
*/
switch (c)
{
case ESC: // End input mode
if (echeck_abbr(ESC + ABBR_OFF))
break;
// FALLTHROUGH
case Ctrl_C: // End input mode
#ifdef FEAT_CMDWIN
if (c == Ctrl_C && cmdwin_type != 0)
{
// Close the cmdline window.
cmdwin_result = K_IGNORE;
got_int = FALSE; // don't stop executing autocommands et al.
nomove = TRUE;
goto doESCkey;
}
#endif
#ifdef FEAT_JOB_CHANNEL
if (c == Ctrl_C && bt_prompt(curbuf))
{
if (invoke_prompt_interrupt())
{
if (!bt_prompt(curbuf))
// buffer changed to a non-prompt buffer, get out of
// Insert mode
goto doESCkey;
break;
}
}
#endif
#ifdef UNIX
do_intr:
#endif
// when 'insertmode' set, and not halfway a mapping, don't leave
// Insert mode
if (goto_im())
{
if (got_int)
{
(void)vgetc(); // flush all buffers
got_int = FALSE;
}
else
vim_beep(BO_IM);
break;
}
doESCkey:
/*
* This is the ONLY return from edit()!
*/
// Always update o_lnum, so that a "CTRL-O ." that adds a line
// still puts the cursor back after the inserted text.
if (ins_at_eol && gchar_cursor() == NUL)
o_lnum = curwin->w_cursor.lnum;
if (ins_esc(&count, cmdchar, nomove))
{
// When CTRL-C was typed got_int will be set, with the result
// that the autocommands won't be executed. When mapped got_int
// is not set, but let's keep the behavior the same.
if (cmdchar != 'r' && cmdchar != 'v' && c != Ctrl_C)
ins_apply_autocmds(EVENT_INSERTLEAVE);
did_cursorhold = FALSE;
return (c == Ctrl_O);
}
continue;
case Ctrl_Z: // suspend when 'insertmode' set
if (!p_im)
goto normalchar; // insert CTRL-Z as normal char
do_cmdline_cmd((char_u *)"stop");
#ifdef CURSOR_SHAPE
ui_cursor_shape(); // may need to update cursor shape
#endif
continue;
case Ctrl_O: // execute one command
#ifdef FEAT_COMPL_FUNC
if (ctrl_x_mode_omni())
goto docomplete;
#endif
if (echeck_abbr(Ctrl_O + ABBR_OFF))
break;
ins_ctrl_o();
// don't move the cursor left when 'virtualedit' has "onemore".
if (ve_flags & VE_ONEMORE)
{
ins_at_eol = FALSE;
nomove = TRUE;
}
count = 0;
goto doESCkey;
case K_INS: // toggle insert/replace mode
case K_KINS:
ins_insert(replaceState);
break;
case K_SELECT: // end of Select mode mapping - ignore
break;
case K_HELP: // Help key works like <ESC> <Help>
case K_F1:
case K_XF1:
stuffcharReadbuff(K_HELP);
if (p_im)
need_start_insertmode = TRUE;
goto doESCkey;
#ifdef FEAT_NETBEANS_INTG
case K_F21: // NetBeans command
++no_mapping; // don't map the next key hits
i = plain_vgetc();
--no_mapping;
netbeans_keycommand(i);
break;
#endif
case K_ZERO: // Insert the previously inserted text.
case NUL:
case Ctrl_A:
// For ^@ the trailing ESC will end the insert, unless there is an
// error.
if (stuff_inserted(NUL, 1L, (c == Ctrl_A)) == FAIL
&& c != Ctrl_A && !p_im)
goto doESCkey; // quit insert mode
inserted_space = FALSE;
break;
case Ctrl_R: // insert the contents of a register
ins_reg();
auto_format(FALSE, TRUE);
inserted_space = FALSE;
break;
case Ctrl_G: // commands starting with CTRL-G
ins_ctrl_g();
break;
case Ctrl_HAT: // switch input mode and/or langmap
ins_ctrl_hat();
break;
#ifdef FEAT_RIGHTLEFT
case Ctrl__: // switch between languages
if (!p_ari)
goto normalchar;
ins_ctrl_();
break;
#endif
case Ctrl_D: // Make indent one shiftwidth smaller.
#if defined(FEAT_FIND_ID)
if (ctrl_x_mode_path_defines())
goto docomplete;
#endif
// FALLTHROUGH
case Ctrl_T: // Make indent one shiftwidth greater.
if (c == Ctrl_T && ctrl_x_mode_thesaurus())
{
if (has_compl_option(FALSE))
goto docomplete;
break;
}
ins_shift(c, lastc);
auto_format(FALSE, TRUE);
inserted_space = FALSE;
break;
case K_DEL: // delete character under the cursor
case K_KDEL:
ins_del();
auto_format(FALSE, TRUE);
break;
case K_BS: // delete character before the cursor
case Ctrl_H:
did_backspace = ins_bs(c, BACKSPACE_CHAR, &inserted_space);
auto_format(FALSE, TRUE);
break;
case Ctrl_W: // delete word before the cursor
#ifdef FEAT_JOB_CHANNEL
if (bt_prompt(curbuf) && (mod_mask & MOD_MASK_SHIFT) == 0)
{
// In a prompt window CTRL-W is used for window commands.
// Use Shift-CTRL-W to delete a word.
stuffcharReadbuff(Ctrl_W);
restart_edit = 'A';
nomove = TRUE;
count = 0;
goto doESCkey;
}
#endif
did_backspace = ins_bs(c, BACKSPACE_WORD, &inserted_space);
auto_format(FALSE, TRUE);
break;
case Ctrl_U: // delete all inserted text in current line
# ifdef FEAT_COMPL_FUNC
// CTRL-X CTRL-U completes with 'completefunc'.
if (ctrl_x_mode_function())
goto docomplete;
# endif
did_backspace = ins_bs(c, BACKSPACE_LINE, &inserted_space);
auto_format(FALSE, TRUE);
inserted_space = FALSE;
break;
case K_LEFTMOUSE: // mouse keys
case K_LEFTMOUSE_NM:
case K_LEFTDRAG:
case K_LEFTRELEASE:
case K_LEFTRELEASE_NM:
case K_MOUSEMOVE:
case K_MIDDLEMOUSE:
case K_MIDDLEDRAG:
case K_MIDDLERELEASE:
case K_RIGHTMOUSE:
case K_RIGHTDRAG:
case K_RIGHTRELEASE:
case K_X1MOUSE:
case K_X1DRAG:
case K_X1RELEASE:
case K_X2MOUSE:
case K_X2DRAG:
case K_X2RELEASE:
ins_mouse(c);
break;
case K_MOUSEDOWN: // Default action for scroll wheel up: scroll up
ins_mousescroll(MSCR_DOWN);
break;
case K_MOUSEUP: // Default action for scroll wheel down: scroll down
ins_mousescroll(MSCR_UP);