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patch 8.1.2194: modifyOtherKeys is not enabled by default

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Problem:    ModifyOtherKeys is not enabled by default.
Solution:   Add t_TI and t_TE to the builtin xterm termcap.
This commit is contained in:
Bram Moolenaar
2019-10-20 19:53:22 +02:00
parent a13961536e
commit 4b57018ee4
3 changed files with 34 additions and 2 deletions
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32
runtime/doc/map.txt
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@@ -20,7 +20,8 @@ manual.
1.8 Examples |map-examples|
1.9 Using mappings |map-typing|
1.10 Mapping alt-keys |:map-alt-keys|
1.11 Mapping an operator |:map-operator|
1.11 Mapping in modifyOtherKeys mode |modifyOtherKeys|
1.12 Mapping an operator |:map-operator|
2. Abbreviations |abbreviations|
3. Local mappings and functions |script-local|
4. User-defined commands |user-commands|
@@ -777,6 +778,9 @@ In the GUI Vim handles the Alt key itself, thus mapping keys with ALT should
always work. But in a terminal Vim gets a sequence of bytes and has to figure
out whether ALT was pressed or not.
If the terminal supports the modifyOtherKeys mode and it has been enabled,
then Vim can recognize more key combinations, see |modifyOtherKeys| below.
By default Vim assumes that pressing the ALT key sets the 8th bit of a typed
character. Most decent terminals can work that way, such as xterm, aterm and
rxvt. If your <A-k> mappings don't work it might be that the terminal is
@@ -814,7 +818,31 @@ on the terminal; that's a good last resource in case you want to send ESC when
using other applications but not when inside Vim.
1.11 MAPPING AN OPERATOR *:map-operator*
1.11 MAPPING IN modifyOtherKeys mode *modifyOtherKeys*
Xterm and a few other terminals can be put in a mode where keys with modifiers
are sent with a special escape code. Vim recognizes these codes and can then
make a difference between CTRL-H and Backspace, even when Backspace sends the
character 8. And many more special keys.
For xterm modifyOtherKeys is enabled in the builtin termcap entry. If this is
not used you can enable modifyOtherKeys with these lines in your vimrc: >
let &t_TI = "\<Esc>[>4;2m"
let &t_TE = "\<Esc>[>4;m"
In case the modifyOtherKeys mode causes problems you can disable it: >
let &t_TI = ""
let &t_TE = ""
It does not take effect immediately. To have this work without restarting Vim
execute a shell command, e.g.: `!ls`
A known side effect effect is that in Insert mode the raw escape sequence is
inserted after the CTRL-V key. This can be used to check whether
modifyOtherKeys is enabled: In Insert mode type CTRL-V CTRL-V, if you get
one byte then modifyOtherKeys is off, if you get <1b>27;5;118~ then it is on.
1.12 MAPPING AN OPERATOR *:map-operator*
An operator is used before a {motion} command. To define your own operator
you must create mapping that first sets the 'operatorfunc' option and then

2
src/term.c
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@@ -912,6 +912,8 @@ static struct builtin_term builtin_termcaps[] =
{(int)KS_TE, IF_EB("\033[2J\033[?47l\0338",
ESC_STR "[2J" ESC_STR_nc "[?47l" ESC_STR_nc "8")},
# endif
{(int)KS_CTI, IF_EB("\033[>4;2m", ESC_STR_nc "[>4;2m")},
{(int)KS_CTE, IF_EB("\033[>4;m", ESC_STR_nc "[>4;m")},
{(int)KS_CIS, IF_EB("\033]1;", ESC_STR "]1;")},
{(int)KS_CIE, "\007"},
{(int)KS_TS, IF_EB("\033]2;", ESC_STR "]2;")},

2
src/version.c
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@@ -741,6 +741,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
2194,
/**/
2193,
/**/