Is there a quick way to search old commands which were run in the Julia REPL? Using the up arrow to go back in time seems to have a limit on its history and it is also quite cumbersome.
One of the five REPL models available in Julia is the "Search mode" which allows you to search through previously executed commands from the REPL. You can click "Control" + "r" to open search mode like is shown below:
(reverse-i-search)`':
There is also a forward search available with "Control" + "s". You can read more about Julia's REPL Search mode here: https://docs.julialang.org/en/v1/stdlib/REPL/#Search-modes
In addition to "real" search, you can also enter the beginning of a previous line and scroll up in the history (using ↑ or Ctrl-P) to switch between all previously entered lines starting with the same prefix.
So, if you had previously entered x = some_complicated_expression, you can write x = and go up until the line you were looking for appears.
Checkout: https://kristofferc.github.io/OhMyREPL.jl/latest/features/fzf/#Fuzzy-REPL-history-search
Which will be easier to use than reverse-i-search
Related
When using the up and down arrow in my terminal (iTerm 2 on Mac OS Catalina), I can browse through my last commands using the up and down arrows.
I use ZSH (Oh-my-zsh to be precise) and if I type e.g. vim then press up, it will browse my history for any commands issued starting with vim.
I think it's annoying to have to move my hand to the arrow keys, so i wanted to bind ctrl-j and ctrl-k for browsing up and down.
I looked at bindkey and bound ^j to down-history and ^k to up-history. This allows me to browse my history, but not with the "smart" functionality (i'm not sure of the right terminology here) - It simply goes up and down in my history, without regards to my input.
I've looked through the standard widgets on the Zsh Line Editor manual, but I cannot find the right command for this.
Which command should I bind ^j and ^k to to get my desired result?
After some further digging, i ended up on the The Z-Shell Line Editor page at the section called "Prefix searching".
It revealed that the widget I was after, is called history-beginning-search-backward.
When using that widget, it works almost as I wanted it to, but not jumping to the end of the line.
A quick search lead me to another StackOverflow Question, that states that if you want to jump to the end of the line (as with the up arrow), it should be done as follows;
I had the same question and managed to find the solution with some experimentation.
I added the following to my .inputrc
"\eOA": history-search-backward # Up
"\eOB": history-search-forward # Down
"\C-P": "\eOA\C-E" # Ctrl-P
"\C-N": "\eOB\C-E" # Ctrl-N
This binds two hotkeys to Ctrl-P and Ctrl-N. One for history search, and the other Ctrl-E for end-of-line.
I'm a happy user of the Nvim-R plugin, but I cannot find out how to scroll up in the buffer window that the plugin opens with R. Say for instance that I have a large output in console, but I cannot see the top of it - how do I scroll up to see this? In tmux for instance there's a copy mode that quite handily lets you do this, but how is this done in the R buffer?
An example below where I'm very curious to see what's on the line above the one begining with "is.na(a)...". How can this be achieved?
I have scoured the documentation found here, but without luck.
The answer is apparently to use Ctrl+\ Ctrl+n according to this answer on the bugreports for NVim-R.
Here's what my output looks like when I output mtcars:
When I hit Ctrl+\ Ctrl+n, I can move the cursor and I get line numbers:
To get back to interactive, I just use i, the same way I normally would.
Apparently, if you are using neovim, then you can add let R_esc_term = 0 in your ~/.vimrc file and you can then use the escape key, but if you don't use neovim, you are stuck using the two ctrl commands ¯\_(ツ)_/¯.
As pointed out by ZNK, it is about switching to normal mode in Vim's terminal. This, however, can easily fail due to cumbersome keybinding. If such is the case, remap the default keybinding to something reasonable, say, by putting this in your .vimrc:
tnoremap jk <C-\><C-n>
This works for me in Linux running Vim 8.0 in terminal (e.g. does not require Neovim). As you can see, I use 'jk' to switch from insert to normal mode. One can use Esc instead of jk, however, this makes me unable to use up arrow to retrieve command line history as been reported elsewhere.
I use Atom on Ubuntu 17.10 with wayland window manager.
I can create multiple cursors with CTRL+Mousclick or with CTRL+d to select the next same string.
But how can I for example mark some lines and create a cursor at the start of each line?
Also would be great to use search and find-all to select lots of results in a text to create a cursor at all these results.
I used this workaround at the moment by selecting the line-break and use CTRL+d to select the next linebreaks too with extra cursors, then go one left and Pos1 to have the cursors at the start of each line.
I wanted to select a string that repeats about 200 times in a dataset of 3000 text-blocks in a bunch of output and then I wanted to expand the selection to each of those blocks. That would have been really easy with multiple cursors. I solved this another way now, but for the next time I would like to see a complete instruction manual about how to create multiple cursors in the standard atom setting. I couldn't find this. Search-engines give me lots of plugins and solutions in different multicursor plugins.
I found the manual that explains it like in sublime (ctrl alt up and down):
Alt+Shift+Up and Down
see: https://flight-manual.atom.io/using-atom/sections/editing-and-deleting-text/#multiple-cursors-and-selections
What is missing in the manual is also a useful option:
use "find all" with the search tool in Atom (CTRL+F)
press Alt + Enter to create cursors at all the found locations.
see: https://discuss.atom.io/t/how-do-i-create-multiple-cursors-from-search-result/53231/5
I wanted to make it easy so I could just use alt+⬇️ or alt+⬆️ to have multiple cursors. This was my solution and I think its the easiest:
# From Atom -> Keymap add the following lines:
'.editor':
'alt-up': 'editor:add-selection-above'
'alt-down': 'editor:add-selection-below'
I would like to retrieve the previous command in my R console that started with a certain character. For example, i can just press the up key to get the last command. However, I'd like the last command that started with xyz for example. Is there a way to do this?
if you're on a linux distro, you can press ctrl+R and start typing, and then ctrl+R to toggle through search matches.
you can also do, history(pattern="^xyz"), but this would require an additional copy.
I have Vim 7.2 installed on Windows. In GVim, the <C-PageUp> and <C-PageDown> work for navigation between tabs by default. However, it doesn't work for Vim.
I have even added the below lines in _vimrc, but it still does not work.
map <C-PageUp> :tabp<CR>
map <C-PageDown> :tabn<CR>
But, map and works.
map <C-left> :tabp<CR>
map <C-right> :tabn<CR>
Does anybody have a clue why?
The problem you describe is generally caused by vim's terminal settings not knowing the correct character sequence for a given key (on a console, all keystrokes are turned into a sequence of characters). It can also be caused by your console not sending a distinct character sequence for the key you're trying to press.
If it's the former problem, doing something like this can work around it:
:map <CTRL-V><CTRL-PAGEUP> :tabp<CR>
Where <CTRL-V> and <CTRL-PAGEUP> are literally those keys, not "less than, C, T, R, ... etc.".
If it's the latter problem then you need to either adjust the settings of your terminal program or get a different terminal program. (I'm not sure which of these options actually exist on Windows.)
This may seem obvious to many, but konsole users should be aware that some versions bind ctrl-pageup / ctrl-pagedown as secondary bindings to it's own tabbed window feature, (which may not be obvious if you don't use that feature).
Simply clearing them from the 'Configure Shortcuts' menu got them working in vim correctly for me. I guess other terminals may have similar features enabeld by default.
I'm adding this answer, taking details from vi & Vim, to integrate those that are already been given/accepted with some more details that sound very important to me.
The alredy proposed answers
It is true what the other answer says:
map <C-PageUp> :echo "hello"<CR> won't work because Vim doesn't know what escape sequence corresponds to the keycode <C-PageUp>;
one solution is to type the escape sequence explicitly: map ^[[5^ :echo "hello"<CR>, where the escape sequence ^[[5^ (which is in general different from terminal to terminal) can be obtained by Ctrl+VCtrl+PageUp.
One additional important detail
On the other hand the best solution for me is the following
set <F13>=^[[5^
map <F13> :echo "hello"<CR>
which makes use of one of additional function key codes (you can use up to <F37>). Likewise, you could have a bunch of set keycode=escapesequence all together in a single place in your .vimrc (or in another dedicated file that you source from your .vimrc, why not?).