I like that in Atom text editor, you can hide code blocks to get a better overview. This is called Folding and is described here. There it says:
Finally, you can fold arbitrary sections of your code or text by making a selection and then typing Alt+Ctrl+F or choosing "Fold Selection" in the Command Palette.
I would like to make use of this, but it doesn't work for me. (I select a section of my code, then press the combination Alt+Ctrl+F, but nothing happens.) My operating system is Linux Mint 20.2 and the Atom version is 1.58.0.
I am looking for a fix or for a different method to fold selected text.
My use-case right now would be to fold Python docstrings. So if someone knows how to accomplish only that in Atom, you would also help me.
Although I did not find out why the hotkey doesn't work, I found a solution that fits my needs. The Atom package custom-folds adds the functionality to define regions that may be folded.
After installing custom-folds, I added the lines #<editor-folds and #</editor-fold> at the beginning and end of the docstring, respectively:
def average(a, b):
#<editor-fold
"""
Return the mean value of inputs a and b
"""
#</editor-fold>
return (a+b)/2
The commands #<editor-fold and #</editor-fold> are recognized and highlighted; also, a dropdown arrow appears where the code region can be folded or unfolded.
Related
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
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'
How is the "run cell" syntax in Hydrogen for Atom used? I placed multiple
# %%
tags throughout my code following the official manual here, but when I press Shift+Enter in between any two of the tags, it still only executes that line, not the entire cell block. I also tried the other syntax formats the manual describes, but none of them execute the whole cell.
A-C-enter hydrogen:run-cell
A-S-enter hydrogen:run-cell-and-move-down
https://github.com/nteract/hydrogen/issues/304
I'm a new Atom user and I want to override the Atom command palette (shift-ctrl-p) scrolling key bindings to something more vi friendly like
ctrl-n and ctrl-p instead of the annoying arrow keys (which force me to take my hands off the home row).
Just to be clear, I don't want to change the key binding that brings up the command palette, but the key bindings you use to scroll through the list once it's up:
I can only find a binding to override the command palette toggle:
As you can see in the following config file, I was able to override the autocomplete scrolling, and I hope to do the same with the command palette. I've tried 'command-palette:up' ,'command-palette:down' and 'command-palette:move-up' etc. to no avail.
Here's is my keymap.cson.
# Atom Flight Manual:
# https://atom.io/docs/latest/using-atom-basic-customization#cson
#vt add
'body atom-text-editor.autocomplete-active':
'ctrl-p': 'autocomplete-plus:move-up'
'ctrl-n': 'autocomplete-plus:move-down'
'alt-p': 'autocomplete-plus:page-up'
'alt-n': 'autocomplete-plus:page-down'
'home': 'autocomplete-plus:move-to-top'
'end': 'autocomplete-plus:move-to-bottom'
# vim-plus ex mode 2016-04-18
'atom-text-editor.vim-mode-plus.normal-mode':
':': 'vim-mode-plus-ex-mode:open'
'!': 'vim-mode-plus-ex-mode:toggle-setting'
# add cmd palette key bindings --> These do not work.
'body .native-key-bindings':
'ctrl-p': 'command-palette:up'
'ctrl-n': 'command-palette:down'
#vt end
I've been really impressed with the key binding support in Atom thus far. I'd be really surprised if it couldn't handle this but, alas, I think this might be the case.
Does anyone know of a way to do this?
Atom 1.7.2, linux
I was able to get single line scroll to work, but not page scroll to work with the following in my keymap.cson:
'atom-workspace':
# these work
'ctrl-p' : 'core:move-up'
'ctrl-n' : 'core:move-down'
# these don't work
'alt-p' : 'core:page-up'
'alt-n' : 'core:page-down'
It would be nice to have page scroll as well, but I should be able to narrow down the list down by typing in text, so I don't foresee needing page-up, page-down all that often.
Now I'm happy.
To target keybindings for just the command palette, you can find an appropriate selector by looking in the command-palette repo keymaps: https://github.com/atom/command-palette/blob/v0.43.5/keymaps/command-palette.cson
This suggests the use of the .command-palette selector, which seems more appropriate then atom-workspace.
'.command-palette':
'ctrl-n': 'core:move-down'
'ctrl-p': 'core:move-up'
I was not able to find a mapping to scroll a page at a time within the command palette, though I'm sure someone else can figure it out. The keyboard page up/down keys have no effect so mapping to core:page-down etc. is not going to work.