Hello,
On February, 5, 2010, Nico Raffo requested the implementation of the
auto command event InsertCharPre, which would be useful to his Conque
Shell plugin [1]. As the developer of the Vim-R-plugin [2], which
optionally uses the Conque Shell plugin, I was also interested in the
patch. We developed the patch, tested it for some weeks, and now I am
submitting the patch to the Vim developers to evaluate.
Thank you!
Jakson Aquino
[1] http://groups.google.com/group/vim_dev/browse_thread/thread/67020478db647370
[2] http://www.vim.org/scripts/script.php?script_id=2628
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diff -r 26fb122355d4 runtime/doc/autocmd.txt
--- a/runtime/doc/autocmd.txt Sat Jan 22 21:25:11 2011 +0100
+++ b/runtime/doc/autocmd.txt Thu Jan 27 11:49:42 2011 -0300
@@ -299,6 +299,7 @@
|InsertEnter| starting Insert mode
|InsertChange| when typing <Insert> while in Insert or Replace mode
|InsertLeave| when leaving Insert mode
+|InsertCharPre| when a character was typed in Insert mode, before inserting it
|ColorScheme| after loading a color scheme
@@ -657,6 +658,14 @@
indicates the new mode.
Be careful not to move the cursor or do
anything else that the user does not expect.
+ *InsertCharPre*
+InsertCharPre When a character is typed in Insert mode,
+ before inserting the char. Pattern is matched
+ with text before the cursor. The |v:char|
+ variable indicates the char typed and can be
+ changed during the event to insert a different
+ character. The event is not triggered when
+ 'paste' is set.
*InsertEnter*
InsertEnter Just before starting Insert mode. Also for
Replace mode and Virtual Replace mode. The
diff -r 26fb122355d4 runtime/doc/eval.txt
--- a/runtime/doc/eval.txt Sat Jan 22 21:25:11 2011 +0100
+++ b/runtime/doc/eval.txt Thu Jan 27 11:49:42 2011 -0300
@@ -1291,6 +1291,7 @@
*v:char* *char-variable*
v:char Argument for evaluating 'formatexpr' and used for the typed
character when using <expr> in an abbreviation |:map-<expr>|.
+ It is also set by the |InsertPreChar| event.
*v:charconvert_from* *charconvert_from-variable*
v:charconvert_from
diff -r 26fb122355d4 runtime/doc/map.txt
--- a/runtime/doc/map.txt Sat Jan 22 21:25:11 2011 +0100
+++ b/runtime/doc/map.txt Thu Jan 27 11:49:42 2011 -0300
@@ -226,7 +226,7 @@
For abbreviations |v:char| is set to the character that was typed to trigger
the abbreviation. You can use this to decide how to expand the {lhs}. You
-can't change v:char and you should not insert it.
+you should not either insert or change the v:char.
Be very careful about side effects! The expression is evaluated while
obtaining characters, you may very well make the command dysfunctional.
diff -r 26fb122355d4 runtime/doc/todo.txt
--- a/runtime/doc/todo.txt Sat Jan 22 21:25:11 2011 +0100
+++ b/runtime/doc/todo.txt Thu Jan 27 11:49:42 2011 -0300
@@ -3419,10 +3419,6 @@
- Before/after ":cd" has been used (for changing the
window title)
ShutDown - when the system is about to shut down
- InsertCharPre - user typed character Insert mode, before inserting the
- char. Pattern is matched with text before the cursor.
- Set v:char to the character, can be changed.
- (not triggered when 'paste' is set).
InsertCharPost - user typed a character in Insert mode, after inserting
the char.
BufModified - When a buffer becomes modified, or unmodified (for
diff -r 26fb122355d4 src/edit.c
--- a/src/edit.c Sat Jan 22 21:25:11 2011 +0100
+++ b/src/edit.c Thu Jan 27 11:49:42 2011 -0300
@@ -309,6 +309,7 @@
long count;
{
int c = 0;
+ char_u *s;
char_u *ptr;
int lastc;
int mincol;
@@ -1385,6 +1386,29 @@
* Insert a nomal character.
*/
normalchar:
+#ifdef FEAT_AUTOCMD
+ /* trigger InsertCharPre event */
+ set_vim_var_char(c);
+ if (apply_autocmds(EVENT_INSERTCHARPRE, NULL, NULL, FALSE, curbuf))
+ {
+ /* get new value of v:char */
+ s = get_vim_var_str(VV_CHAR);
+
+ /* if new value is empty string, don't add to buffer */
+ if (*s == NUL)
+ {
+ set_vim_var_string(VV_CHAR, NULL, -1);
+ break;
+ }
+ /* get the new value from autocommand function */
+#ifdef FEAT_MBYTE
+ c = (*mb_ptr2char)(s);
+#else
+ c = *s;
+#endif
+ }
+ set_vim_var_string(VV_CHAR, NULL, -1);
+#endif
#ifdef FEAT_SMARTINDENT
/* Try to perform smart-indenting. */
ins_try_si(c);
diff -r 26fb122355d4 src/eval.c
--- a/src/eval.c Sat Jan 22 21:25:11 2011 +0100
+++ b/src/eval.c Thu Jan 27 11:49:42 2011 -0300
@@ -352,7 +352,7 @@
{VV_NAME("swapname", VAR_STRING), VV_RO},
{VV_NAME("swapchoice", VAR_STRING), 0},
{VV_NAME("swapcommand", VAR_STRING), VV_RO},
- {VV_NAME("char", VAR_STRING), VV_RO},
+ {VV_NAME("char", VAR_STRING), 0},
{VV_NAME("mouse_win", VAR_NUMBER), 0},
{VV_NAME("mouse_lnum", VAR_NUMBER), 0},
{VV_NAME("mouse_col", VAR_NUMBER), 0},
diff -r 26fb122355d4 src/fileio.c
--- a/src/fileio.c Sat Jan 22 21:25:11 2011 +0100
+++ b/src/fileio.c Thu Jan 27 11:49:42 2011 -0300
@@ -7666,6 +7666,7 @@
{"InsertChange", EVENT_INSERTCHANGE},
{"InsertEnter", EVENT_INSERTENTER},
{"InsertLeave", EVENT_INSERTLEAVE},
+ {"InsertCharPre", EVENT_INSERTCHARPRE},
{"MenuPopup", EVENT_MENUPOPUP},
{"QuickFixCmdPost", EVENT_QUICKFIXCMDPOST},
{"QuickFixCmdPre", EVENT_QUICKFIXCMDPRE},
diff -r 26fb122355d4 src/vim.h
--- a/src/vim.h Sat Jan 22 21:25:11 2011 +0100
+++ b/src/vim.h Thu Jan 27 11:49:42 2011 -0300
@@ -1281,6 +1281,7 @@
EVENT_WINENTER, /* after entering a window */
EVENT_WINLEAVE, /* before leaving a window */
EVENT_ENCODINGCHANGED, /* after changing the 'encoding' option */
+ EVENT_INSERTCHARPRE, /* before inserting a char */
EVENT_CURSORHOLD, /* cursor in same position for a while */
EVENT_CURSORHOLDI, /* idem, in Insert mode */
EVENT_FUNCUNDEFINED, /* if calling a function which doesn't exist */
