I've tried to use the command for spliting cell 'm -' but it doesn't work. All the reset of the key commands work fine with either esc or fn key as modifiers. I'm also in the correct mode(edititng mode).
Splitting cell is Ctrl+Shift+- (minus sign) in edit mode.
Related
In most command line interface "cli" programs the Option-arrow key combinations allows one to move forwards/backwards a word at a time. But in psql both Option-arrow and Control-Arrow actually insert non printable control characters that corrupt the command. In addition in most CLI programs hitting CTL-A goes to the beginning of the command and CTL-E goes to the end of the command. But in psql those combinations do not have any effect.
Navigating a single character at a time is simply too slow: I can not imagine this were an unsolved problem. What is the configuration needed to get one of those key combinations to skip forward/backward by words not characters?
This is an answer containing the response in the comment by by #Marth. The ~/.inputrc does cause the issue.
# want vi to be the default editor for readline
set editing-mode vi
$if mode=vi
# normal mode
set keymap vi-command
set keymap vi-insert
"\C-n": backward-kill-word
"\C-p": history-search-backward
$endif
I have completely removed the ~/.inputrc now.
I'm trying to use Auto Hot Key to replace $ with %. I also am replacing & with $.
My problem is that when I press the & key (now remapped to $), it thinks I'm actually pressing $, so it triggers the code and types %.
This is the code:
~::#
#::?
%::^
^::~
$::Sendraw `%
&::$
?::+
/::_
+::&
=::/
_::=
My keyboard layout doesn't have these keys as actual keys, so I can't really test this for you, but I can still tell you what will likely fix the problem, and then an other version which will definitely fix the problem.
So the thing that will likely fix the problem is using the $ modifier (docs). You should only need it for the $::Sendraw `% hotkey, because the other hotkeys use the remapping syntax and will automatically do what adding the $ does.
So your script would look like this:
~::#
#::?
%::^
^::~
$$::SendInput, `%
&::$
?::+
/::_
+::&
=::/
_::=
(and I also switched to using SendInput because SendRaw really made no sense there)
That should work if all the hotkeys are as actual keys on your keyboard layout (as opposed to being accessible with modifier key combos (e.g. CTRL + ALT + 2), like they are on my keyboard layout).
Why it wouldn't work when having to mess with modifiers keys is a bit more complicated. I can explain it in detail if you're actually interested, but for now I'll just say it's because of the blind send mode the remapping syntax uses.
So, not using the remapping syntax like this should ensure it'll work on any keyboard layout no matter what:
*~::SendInput, #
*#::SendInput, ?
*%::SendInput, {^}
*^::SendInput, ~
*$::SendInput, `%
*&::SendInput, $
*?::SendInput, {+}
*/::SendInput, _
*+::SendInput, &
*=::SendInput, /
*_::SendInput, =
Here we're using the * (docs) modifier to deal with having to hold modifier keys to access hotkeys. And we're not using $ modifier, because using * already does what $ does. So having them both would be redundant.
+4::SendInput, `%
This should work fine.
emacs version "emacs-24.3" on linux
If I am at the start of this line...
a b
(where single spaces are the spaces between the letters)
When I use ctrl-s and then hit the space bar to get the next space, it jumps to the space just before the 'b' instead of the space right after the a. It doesn't behave like this for other characters. It looks like someone went to great lengths to enable this behavior as some sort of feature. But I find it very annoying. How can I shut this off? How can I make it treat spaces like any other character when searching for characters/strings ?
my ~/.emacs does nothing except define keys. inhibit splash and startup screens and change fg/bg colors.
If you press C-h k C-s, you will see the help text for isearch-forward. It contains this section:
Type M-s SPC to toggle whitespace matching.
In incremental searches, a space or spaces normally matches any whitespace
defined by the variable search-whitespace-regexp; see also the variables
isearch-lax-whitespace and isearch-regexp-lax-whitespace.
Use
(customize-set-variable 'search-whitespace-regexp nil)
or use customize to set the variable to nil.
I have 2 columns, separated by comma. How can I swap those columns with Emacs?
I have the following:
column 1,column2
x1,x2
y1,y2
f1,f2
and I want it like this:
column2,column 1
x2,x1
y2,y1
f2,f1
Use M-x query-replace-regexp and then:
\(.+\),\(.+\)
as replace regexp and
\2,\1
for replacement.
In Emacs, you need to escape grouping parentheses with \. So, above regexp would be usually written as
(.+),(.+)
which means that you want everything before comma in first group and everything after comma in second group.
\2,\1
means: write second group, then comma, then first group.
While you can apply techniques given by other people, you can also use the org-mode tables.
Once you convert the data into org-mode table, it is very easy to swap the columns by simple keystrokes. You can have M-x org-mode, select the region then do M-x org-table-convert-region, and then M- on the right most column. I am not sure, how to export the data as CSV, but that should be very easy for you with replace-regexp. This can be helpful: http://www.gnu.org/software/emacs/manual/html_node/org/Tables.html#Tables
Similar to the answer given by #darioo, type the following into the top of your buffer:
(query-replace-regexp "\\(.*?\\),\\(.*\\)" "\\2,\\1")
Then, put your cursor at the end of this line and press ctrl-x, ctrl-e.
You will have an interactive search-and-replace for which you press the space bar to make the change, and press ctrl-g to quit. If you press ! (exclamation mark) then the search will cease being interactive and take place on all matching text.
If you want to reverse the changes then press M-x (usually ESC followed by x) and type undo and press enter.
Emacs has a rectangular selection mode, see for example: http://emacs-fu.blogspot.com/2008/12/working-with-rectangular-selections.html
Even better, if you enable cua-mode, entering Ctrl-Enter will put you in rectangle selection mode that is very easy to use.
http://trey-jackson.blogspot.com/2008/10/emacs-tip-26-cua-mode-specifically.html
Use a macro !
Go to the first line of the buffer
Start recording a macro (F3)
Move to the beginning of the line (^a)
Search for comma (^s ,)
Transpose (M-t)
Move cursor down one line
Stop recording macro (F4)
Select the rest of the lines and:
M-x apply-macro-to-region-lines
UPDATE: This doesn't work properly if you have multiple words in a column. Looking for a more general solution...
In GNU screen, I want to change the default command binding to Alt-s (by tweaking .screenrc) instead of the default C-a, the reason is I use emacs hence GNU screen binds the C-a key, sending "C-a" to the emacs becomes tedious (as #Nils said, to send "C-a" I should type "C-a a"), as well as "C-a" in bash shell, and I could change the escape to C- but some of them are already mapped in emacs and other combinations are not as easy as ALT-s . If anyone has already done a ALT key mapping, please do let me know.
It is possible to work around :escape command limitations using registers and :bindkey command. Just put this in .screenrc:
# reset escape key to the default
escape ^Aa
# auxiliary register
register S ^A
# Alt + x produces ^A and acts as an escape key
bindkey "^[x" process S
## Alt + space produces ^A and acts as an escape key
# bindkey "^[ " process S
See http://adb.cba.pl/gnu-screen-tips-page-my.html#howto-alt-key-as-escape
From my reading of man screen it seems like the only meta character that screen can use for the command binding is CTRL:
escape xy
Set the command character to x and the character generating a literal
command character (by triggering the "meta" command) to y (similar to
the -e option). Each argument is either a single character, a two-character
sequence of the form "^x" (meaning "C-x"), a backslash followed by an octal
number (specifying the ASCII code of the character), or a backslash followed
by a second character, such as "\^" or "\\". The default is "^Aa".
If there is some mapping that you don't use in emacs, even if it's inconvenient, like C-|, then you could use your terminal input manager to remap ALT-X to that, letting you use the ALT binding instead. That would be a little hackish though.
I'm an Emacs and screen user as well. Although I rarely use Emacs in a terminal -- and as such in a screen session -- I didn't want to give up C-a for the shell either (which uses Emacs key bindings). My solution was to use C-j as the prefix key for screen, which I was willing to sacrifice. In Emacs programming modes it is bound to (newline-and-indent) which I bound to RET as well, so I really don't miss it.
By the way: I know this is an advise rather than an answer, but I felt this would be valuable enough to post nevertheless.
To make Alt+X the default prefix for commands and free C-a, add the following lines to .screenrc:
escape ^||
bindkey "^[x" command
As a side effect C-| will be command prefix too. If you need this keys to be free too, then fix "escape ^||" accordingly.
Screen doesn't have any shorthand syntax for alt bindings, but you can give it the octal code directly. For instance on my machine, Alt-x has the hex code F8, or 370 octal, so putting
escape \370x
in my screenrc changed the escape code to alt-X
Tested and works with screen 4.00.03 on Linux.
You may have to change the escape, since I think this may depend on things like your language and codeset, etc: how I found out what my escape code was was to type
$ echo -n ^QM-x | perl -ne 'printf "%lo\n", ord($_)'
^Q is the quoted-insert command for readline (it inserts what you type directly without trying to interpret it) and M-x was a literal Alt-X.
Fellow emacs user here.
The best solution I've found is a ~/.screenrc file with the following:
# C-a :source .screenrc
escape ^gg
Live updated here: https://gist.github.com/1058111
See also: http://ubuntuforums.org/showthread.php?t=498675
Something I have had for years in my .screenrc:
escape ^Zz
which is now hardwired in muscle memory for me.
Somehow I ended up having to share a screen with someone else's config, and now I keep stopping processes all the time (bash ^Z)... Not funny...