I'm playing around a bit with DrRacket in the BSL language.
When I'm trying to create a comment like so:
;; Hi(10, 50]
The program fails in the moment when typing the ]. I can only end it via TaskManager. It uses 13 CPU in the TM.
Has anyone of you a solution for that? or is it simply not to use ].
Thank you
This is some bug that was reported several times recently, and there's no fix, yet. It's probably a result of some non-english keyboard layout (which was the case in these reports). Hopefully it will get fixed soon...
UPDATE: The bug was fixed for the next release, but in the meanwhile Matthew posted some instructions on how to do a temporary fix -- repeated here for reference:
We have tracked down a problem that occurs when the AltGr key is needed
to type ].
DrRacket gets stuck due to a bad implementation of an operation that is
intended to be bound to Alt-]. For most of you, though, the problem is
that you didn't want the Alt-] keybinding at all; you're just trying to
type ], and it's misinterpreted as Alt-].
You can work around the problem by placing the five lines at the end of
this message in a file, and then selecting the file via the
Edit -> Keybindings -> Add User-defined Keybindings...
menu item in DrRacket. Typing ] should work immediately after, and
typing [ will also give you just [ (instead of [ and ]).
Beware that after you select the file, it will be difficult to unselect
it. It turns out the the menu item to un-select a keybindings file is
also buggy! Your best bet is to put the file in a place that it can
stay. (You can still edit the file and restart DrRacket if you just
want to drop the bindings.)
Related
I am using VSCode Hypersnips (based off of Vi's https://github.com/SirVer/ultisnips), following this guide . See also Create-Snippets-For-Ultisnips.
Consider the following example: I have a snippet
snippet fm "inline Math" wA
\(${1}\) $0
end snippet
and another snippet
snippet ( "parenthesis" wiA
($1) $0
end snippet
If I were to type fm, then that would produce \(|\) |, where the first | is where my cursor is, and the second | is where my cursor would be if I pressed <Tab>. Now, when I type fm ( hi <Tab> that produces \((hi) |\) as expected, but when I press <Tab> again (hoping to use the $0 tab stop of the fm snippet), I don't get outside the right \) like I want, and instead a tab character (i.e. 2 spaces) are placed where the cursor is.
I am wondering if I can nest snippets like this, and still use the tab stops of the outer snippet once I exit the inner snippet.
I assume the same issue occurs if I use native VSCode snippets.
StackOverflow informs me that a similar question has been asked: Atom - Nested snippets with tab stops error, but not about VSCode's snippets.
It seems this is known issue: https://github.com/draivin/hsnips/issues/78. This is a summary of the issue from Dec. 2 2021:
So, I looked into it, the placeholder disappearance is caused by a
workaround we are currently using to get around a VsCodeVim issue.
History time:
We started using the workaround to get around this issue Trigger A leaves me in visual mode, I want it to leave me in insert
mode instead #28.
Supposedly, the related issue in VSCodeVim was fixed
here Snippet is not working Properly VSCodeVim/Vim#5240.
I'm not sure
if it was never properly fixed, or if a regression happened, but it
seems that the issue still exists (see Unexpectedly entered visual
mode in snippet VSCodeVim/Vim#7068), so while that issue is still
open, we can't remove the workaround and fix this bug.
For now, https://github.com/draivin/hsnips/issues/126 offers what I think is the best solution, namely using VSCode Neovim.
I'm a complete newbie when it comes to emacs. I recently installed Doom emacs and I've been really enjoying it. One thing that I'm struggling to find out is how do I quickly access/select on of the actions that are given to me by lsp-mode (I assume it's lsp-ui). I've attached a screenshot - the actions that I'm referring to are on the right-hand side.
Quick side questions:
When I jump to definition (spc-c-d) how do I jump back? Do I just kill the buffer?
Using ivy, how can I easily go through the list? - using control-n is a bit hard
You can come back to the previous buffer using CTRL+O
You can go down or up in the list using CTRL+j or CTRL+k
There are some tricks to get the answer:
first, try to find the action or function you know.
example 1. "M-x action-you-want-to-know"
example 2. "C-h k then-type-the-shortcut-key-you-want-to-search"
second, try to get the answer from project issues
The answer to your question:
1: press "C-o" jump backward
2: Try to input multi keywords in your search field to narrow down the search scope, just like increment search.
If you get too many lines after ivy-search some keyword you input, that means you donot know what you want to search, right?
I'm tinkering about switching my IDE to emacs. (I'm still an emacs newbie.)
The problem is that I customized my IDE quite well and I'd regret to leave my helpers behind.
Let me explain:
Shows the current open files/buffers, allows fast switching with a hotkey (C-1, C-2, ...)
Shows the most recent texts on the "clipboard" or inserted by complete (no. 4), text insertable with a hotkey (C-b 1, C-b 2, ...) Last inserted shown in bold, insertable with C-`
The last inserted complete (no. 4) text, insertable with M-`
Autocomplete-ish list, gathered from all open files, regardless of their type with some magical logic. text insertable with a hotkey (M-1, M-2, ...)
I guess emacs has such features, but I'm a visual type I'd like to see what I have available.
Of course actual hotkeys don't matter much, but as you see having all that info visible makes it easy to hit the spot with the least keypresses.
My pain is that there is a plethora of emacs extensions providing various features, checking all seems to take a lifetime.
My question is:
are there any emacs extensions to achieve similar looks and behavour?
as I'm a programmer, which extensions could I take as a base to assemble something like this?
Thanks!
Elaborating a bit more:
I’m a python dev, so most of the code I’m writing is python. Add some HTML JS CSS XML to the picture.
One important thing is that completion needs to work across filetype boundaries, because python / HTML(template) / XML(config) / doctest identifiers are cross-referenced. It’s a huge pain with some IDEs that completion works only for python filetypes.
I have a lot of same named files but in different folders, like init.py, configure.zcml, etc. It seems to be a pain to switch between those by filename.
Better said that’s a list of recently inserted text. To be reused by the fewest keys as possible. Usually when coding I’m reusing the same identifiers/whatever within the same task. So it’s handy to have them listed instead having to retype the starting x chars to get completion again.
Usually best use of this feature is when changing/refactoring code. Like adding one more extra feature and the identifier is needed several times over the place.
TL;DR
Learn keyboard macros. Learn yasnippet.
Autocomplete mode is probably similar to what you have.
Get acquainted with emacs kill-ring before trying to change it, it wants to be your friend. Then you'll know what to look for when you DO want to change it.
Long Version
Shows the current open files/buffers, allows fast switching with a hotkey (C-1, C-2, ...)
You have three options for this.
My personal preference is to have all source files open at all times. So I don't need a visual list of open buffers. Whenever I want to switch to a file I hit C-= (which I've bound to iswitchb-buffer) and type a couple of unique letters. It's common to constantly switch between the same two buffers so I also bound C-backspace to previous-buffer.
Another option I can recommend is tabbar. It's not exactly like your setup, but it displays a list of open buffers (just like webpages in a browser) and it has functions for cycling through the tabs, so it shouldn't be hard to reproduce your C-number key bindings.
You could use speedbar or ecb. They would be the most similar to your current visual configuration, but I'd argue the other options are more efficient.
Shows the most recent texts on the "clipboard" or inserted by complete (no. 4), text insertable with a hotkey (C-b 1, C-b 2, ...) Last inserted shown in bold, insertable with...
I see you've sort of mixed the clipboard with completion history. When it comes to emacs, yasnippet and autocomplete are just so good you're better off going with them for completion (see below).
Emacs clipboard is called the kill-ring. I'm sure you know of C-y and M-y, so you can always recover anything you've cut in the past. Unfortunately, I don't know of any packages that constantly display the kill ring or allow you to yank a specific part of it (though that shouldn't be too hard to write), but at least you know what to search for (kill-ring).
The last inserted complete (no. 4) text, insertable with M-`
I'll be honest, I don't see that much use in this. If you have to repetitively insert text, you should learn keyboard macros. In fact, you should learn keyboard macros anyway, they're the first reason I got hooked to emacs.
Autocomplete-ish list, gathered from all open files, regardless of their type with some magical logic. text insertable with a hotkey (M-1, M-2, ...)
Emacs had many great completion options. In your case, the best one is probably autocomplete-mode. It pops-up completion options (much like your separate completions window), and I think it allows for quick selection of a specific option (like your M-number shortcuts). Also it has several different ways of deciding which completions to offer you (it calls them "sources") and one of them is to gather from all buffers.
In addition to that you have yasnippet, and I couldn't possibly recommend it enough. Seriously. Learning to use it and writing your own snippets will change the way you write code. You'll become a mage whose fingers produce pages of code flowing through your screen in blazing speeds. Use yasnippet!
Once you have it configured, every 3 or 4 keys you press will generate a line (or more) of code for you.
After all that, if you still miss something from your previous editor you'll write it yourself. :-)
Your setup looks exactly like https://github.com/emacsmirror/ecb.
To me at least, since I don't use side-bars:)
You should take a look at the extension speedbar. I have installed this extension, but I rarely use it even for a very large project.
When we're using ctags in vim and want to go to particular definition of variable or function we press ctrl + ], when we want to go back we press ctrl + T.
When we want to autocomplete a name of a variable we press ctrl + N and from a little violet window we can choose the right word.
Is it possible to improve go to definition so that we won't jump in the document, but only the little window with the function or variable definition will appear?
thank you
You want a way to see the function's signature without actually jumping to its definition?
I know about two plugins supposed to provide exactly this feature:
EchoFunc,
Tag Signature Balloons
The last time I tried echofunc it didn't work for JavaScript, at least for me, but it worked well for the few PHP files I've tested it with. I didn't try the other one because it's GVim-only and I use the CLI version almost as often as the GUI version.
But you can also use TagList and/or TagBar: two very useful plugins providing great code navigation based on ctags. Both will display the signature of the tag under your cursor if you hit <Space>.
In vim, visual block can be recall by 'gv' command so that multiple commands can be applied easily. (such as, comment out, then indent, then do_something_fun).
In Emacs, how can this be achieved?
[C-xC-x] only works when current cursor position stays where previous block ended.
If previous block was changed, the closest is to go through 'point-to-register' and 'jump-to-register'.
Just I am curious if there is an Emacs built-in command making this in one shot.
If Transient Mark mode is off, the region is always active. If it's on (which it sounds like is your situation), you can set mark-even-if-inactive to non-nil to allow region commands to work while the region isn't highlighted.
However, note you also can cycle back through previous mark positions using C-u C-SPC -- this will pop the mark ring. Once you're back to where you want to be, C-x C-x will rehighlight the region you want. (It may take a little bit of playing with this feature to get a feel for it, but it's why I can't switch away from Emacs now.)
If I understand correctly what you are asking for, then you don't need to do anything. When you select a region in emacs, it stays selected until you select a new one. So you could select the region and then perform as many actions as you want.
Sounds like you're looking for the secondary selection, which stays put even as the region might change. (It stays put until you move it.)
See:
the Emacs manual, node Secondary Selection
Emacs wiki page Secondary Selection
library second-sel.el:
Also narrow-to-region (CTRL-x n n ) applies every command from then on just to that region- you can't hurt the rest of the buffer, it doesn't even show. After done editing , widen (CTRL-x n w )to get back the whole buffer.
CMM
If you use evil-mode, just press gv like in vim.
Since the answers here and for other similar SO questions didn't help for me (CUA-mode, Emacs 24, not only indent-rigidly), I continued searching and finally found a reselect-last-region defined in this collection of custom function (starting line 670). That worked like a charm for me - and hopefully does for others still arriving here.