In Rstudio I simply hit the up arrow to cycle through recent commands I submitted in console. Is there similar functionality in ESS?
The usual keys for this sort of thing in Emacs are M-p/M-n and C-<up>/C-<down>.
In the R console window, C-p and C-n will cycle up and down previous commands
Related
There's a way to launch a process(continuously) in emacs?
For example, imagine ruby REPL, I expect launch the command "irb" in emacs and it should be in some some kinda of separated tab or buffer.
For the specific case of REPLs in Spacemacs you can start one for any supported language with SPC m s i then explore SPC m s prefix command for all the commands to interact with the REPL.
M-x shell
irb
This will cover simple use cases. To get previous commands, type M-p and M-n instead of up and down.
You can get a fancier version from #legoscia's link.
Can also do M-! to execute a single shell command and output to a new buffer.
In org-mode, pressing M-S-RET (meta-shift-return) will create a new TODO on a new line. This key sequence sends M-RET to emacs through my terminal. I've checked this with C-h c ESC-S-RET, which returns M-RET is undefined in the mini-buffer.
I'm using Snow Leopard with Emacs 23.2.1 running in Terminal.app. There is no option to define a RET sequence in the terminal keyboard preferences.
Any idea what's causing the missing SHIFT? Workarounds?
You can get Emacs to pretend that it got S-RET with C-x # S RET (note uppercase S).
This also works for adding control, meta, alt, hyper or super modifiers; type C-x # C-h for the list of bindings. The Modifier Keys section in the Emacs manual mentions this as well.
In general, lots of keystrokes are simply impossible to send via a terminal, since terminals emulate an old protocol that only allowed 256 separate keys (or maybe only 128).
Chances are, when you press S-RET, Terminal.app does exactly the same thing as if you'd pressed RET. Thus Emacs has no way to distinguish those two cases.
Cross-linking to other Q&As:
If you are using an xterm, then the modifyOtherKeys option may facilitate that binding. See the following for details:
Send "C-(" to Emacs in VT100/xterm terminal (Mac OS X's Terminal)?
I suspect Emacs recognises those codes by default, but if not then also see input-decode-map as described here: Binding M-<up> / M-<down> in Emacs 23.1.1
See explanation and alternative shortcuts for TTY here.
Some of these have worked for me in a terminal in Ubuntu Linux (both locally and over SSH), but not all of them seem to work. For example, the alternative provided for S-RET (which I expected to run org-table-copy-down) instead seems to run org-clone-subtree-with-time-shift for some reason. However, I have found the list of alternatives useful, particularly those with the M- prefix. For example ESC UP for M-UP to move text around in tables.
I would like to, after switching to the buffer where I usually run commands, navigate the history by searching it, rather than navigate one-command-at-a-time at the end of the buffer (e.g. C-p).
Basically I would like to "Reverse I-search" the command history at the end of the buffer, rather than search the buffer.
Did anyone code a working solution? Note that I noticed there is a Command History buffer available, but here it is just a bunch of text and it is not grouped well enough I think to use.
As in a terminal, you can use M-r to search backward. It works in comint-mode, but it also work elsewhere, like in M-x (M-xM-rpatternRET).
Yes, with Icicles.
In Icicle mode, command icicle-comint-search is bound to C-c ` in shell buffers. It gives you the behavior you are looking for. It is described here.
It uses only stuff that is in the currently visible history as candidates, however. If you want to access stuff from your history from previous sessions then use command comint-input-ring, bound to C-c TAB, instead. (This is explained in the same doc.)
I'm using emacs23 on Ubuntu 32-bit 10.04/10.10 with GNOME and Compiz.
Pressing M-RET in an org-mode plain list in Emacs (GUI) inserts a new item. Pressing M-Up moves the item up in the list.
These keys don't work as expected in emacs -nw under Terminator and gnome-terminal. The M-Up key does nothing, whereas the M-RET key simply moves the cursor down one line and indents the position. The keys also don't "work" in xterm, which inserts \215 instead. Pressing ESC-RET or ESC-Up instead produces the expected functionality. The same problems exist if I run emacs -nw on a headless server accessed via ssh under Terminator, gnome-terminal and xterm.
I've searched both generally and on the org-mode Gmane list for an answer to this, but have not found anything. Is this a known issue with org-mode or is it related to the terminal emulator and/or the Window Manager?
In addition to the keys in my question, S-TAB, S-Left, S-Right, S-Up and S-Down were not working over ssh and PuTTY. Using certain keys on a TTY connection (ssh, screen, PuTTY) is a known issue.
Alternative keys are included in org-mode as detailed in 'Using Org on a TTY' in the org-mode manual.
Alternative key combinations exist
for equivalent to M-RET
M C-m
"<return>" is the Return ↩ key while emacs runs in a graphical user interface.
"RET" is the Return ↩ key while emacs runs in a terminal.
"RET" is also equivalent to "C-m" (【Ctrl+m】). (http://ergoemacs.org/emacs/emacs_key_notation_return_vs_RET.html)
as equivalents for M-<up/down> you can use
ESC-<up>
ESC-<down>
The menubar of terminal emulator is not letting the M key that is meant for Emacs be passed down to Emacs. For Emacs to receive the M key as it is supposed to, you could either use the Esc or disable the menubar and use M key in Emacs as usual.
ADDED:
For the xterm, if you do CTRL+Mouse Button 1, you will see "Meta sends Escape". You need to make sure that option is checked/enabled to make M work as it should in Emacs.
I'm using zsh in OS X Terminal.app and for quite a while, I've been longing for a way to jump back and forth between prev/next prompts in the terminal's output.
One convenience with this would be to be able to review (and track errors at) the end of each command's output; eg. when you building stuff from source with ./configure; make; make install. Note: I'm obviously not referring to jumping back and forth in the command-history, but for a way to take a peek at the endings of each command's output.
Has anyone heard of such functionality in the *nix (preferrably also Mac) world? Would it require some sort of OS-centric Terminal plugin, or can it be programmatically done via a shell script which can be tied to a keyboard shortcut? Maybe I'm the only one thinking about this? :)
Edit: Here's an example scenario: Let's say I want to compile and install some program (using standard ./configure && make && make install procedure) and after the make command, I run into some errors. Now, the way I understand it (I may be completely wrong), the crucial error causing the make command to fail usually shows up in the last line(s) in the output, no? Anyway, at this point, I might do something like cat INSTALL to read up on the INSTALL document to check whether there's something I've missed. NOW, if I want to go back to see what the error was, that caused my initial make command to fail, I then have to manually scroll up to that position again, since my cat INSTALL command printed a ton of text after it.
I don't know if this scenario is the most elucidative – but there are many other situations where I wish I could just "jump" back to previous prompt lines and check up on previous command output; whether it was a simple ls command, make, git status, or whatever it was – swapping positions in the window by means of using prompt lines as "bookmark" positions seems an interesting idea to me.
command + left or right goes between tabs in iterm. is this what you are asking?
Emacs has a shell-mode that runs a shell inside the Emacs editor, providing a rich environment of additional commands for navigating and working with shell commands. This includes commands for going to the previous/next prompt, and deleting the output from commands so you can "clean up" and issue another command.
If you aren't familiar with Emacs: to start a shell inside Emacs, run emacs from the shell, then type Esc-x (or Meta-x, if you have "Use option as meta key" enabled in Terminal > Preferences > Settings > [profile] > Keyboard). This will ask for a command to execute. Enter shell.
To see a list of commands you can use in Shell Mode, enter Control-h m. Here are the ones for moving the cursor to the previous/next prompt:
C-c C-n comint-next-prompt
C-c C-p comint-previous-prompt
These commands would also be useful:
C-c C-r comint-show-output
C-c C-o comint-delete-output