Ivy is an interactive interface for completion in Emacs. Emacs uses completion mechanism in a variety of contexts: code, menus, commands, variables, functions, etc. Completion entails listing, sorting, filtering, previewing, and applying actions on selected items.
When active, ivy-mode completes the selection process by narrowing available choices while previewing in the minibuffer. Selecting the final candidate is either through simple keyboard character inputs or through powerful regular expressions. Ivy is for quick and easy selection from a list.
When Emacs prompts for a string from a list of several possible choices, Ivy springs into action to assist in narrowing and picking the right string from a vast number of choices.
Install Ivy automatically through Emacs's package manager, or manually from Ivy's development repository. Emacs In MELPA, Ivy is split into three packages: ivyswiper and counsel ; you can simply install counsel which will bring in the other two as dependencies. For package manager details, see emacs Packages.
Note: ivy-mode can be toggled on and off with M-x ivy-mode. If you want, you can go without any customizations at all. The above settings are the most bang for the buck in terms of customization. So users that typically don't like customize a lot are advised to look at these settings first. Here is a list of commands that are useful to be bound globally, along with some sample bindings:. You can also enable counsel-mode to make some global key binding remapping for you.
Ivy includes several minibuffer bindings, which are defined in the ivy-minibuffer-map keymap variable. The most frequently used ones are described here. These keys, also active in the minibuffer, are described under their respective commands.
Specifies the wrap-around behavior for C-n and C-p.Helm is an Emacs framework for incremental completions and narrowing selections. It helps to rapidly complete file names, buffer names, or any other Emacs interactions requiring selecting an item from a list of possible choices. Helm is a fork of anything. Helm cleans the legacy code that is leaner, modular, and unchained from constraints of backward compatibility. Helm wiki FAQ. In addition of its framework where you can build your own Helm applications, Helm provides preconfigured commands to browse and search incrementally in files, buffers, bookmarks etc… and much more.
Note: You will find many helm extensions providing diverse features sometimes already implemented in Helmprefer generally the ones that are natively in Helme. Helm support natively most grep implementations as backend ack, ag, rgno need to install 3rd party packages for this. These packages should require helm as follows:.
Requiring helm builds and runs helm code necessary for multiple regexp and fuzzy matching. See helm wiki for details. Installation methods that circumvent helm-config are known to fail if the careful safeguards are not implemented in the hacks. For minimal helm configuration, run the start-up script. The full configuration I the helm maintainer use is here. Enabling helm-mode will enable helm for many features of emacs requiring completions, see below how to enable helm-mode.
M-x helm-M-x RET helm- lists helm commands ready for narrowing and selecting. C-h m pops an org buffer with detailed documentation about current command and more generalized infos about helm. M-x helm-mode to enable helm completion for common Emacs commands.
Note that the helm functionality enabled through helm-mode comes from a generic implementation and does not include all helm features available through equivalent helm-specific commands. Another way to discover helm commands: run the shell script:. Helm contains many features, some of which are easier to follow visually. Here is a demo of helm-buffers-list used with helm-moccur. With more pattern matching, candidates are narrowed down from the initial buffers to 12 as shown in the modeline.
Helm support by default multi pattern matching, it is the standard way of matching in helm. Each pattern can be a regexp. In addition helm support fuzzy matching. The candidates list may be replaced by a function that produces a list. These are popular applications developed using helm completion and narrowing framework. They are available for individual installs through the Emacs package manager.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Already on GitHub? Sign in to your account. Your vimmy emacs setup is very interesting to me. Would be great to hear more about it. In particular, it's not clear how you're choosing between helm and ivy. Am I correct to say that you use both? Why is that? Yeah I don't have my emacs config up because it's pretty messy, but there aren't too many interesting things I'm doing that aren't mentioned here or in the evil-guide repo.
As for ivy and helm, I generally prefer ivy now, but I use helm if there isn't an existing ivy alternative for something. I haven't kept up with ivy's developments, and I'm not a power user of either, so I'm proably not the best person to ask though.
As for modality, I've always used hydra to add it. While ivy now ships with such a hydra, you can also just copy one of the helm ones off of the hydra wiki into your config, so there's not much of a difference. I honestly don't use this functionality that often. Normally, I'll just narrow the search and hit enter. If I use the hydra, it's usually just to move up and down. I used to use key-chord to execute the hydra as opposed to having to hit escape twice to exit ivy or helmbut with input lag, key-chord wrongly executes even when typing slowly, so I stopped using it.
Now I'm giving up comma for the hydra, and I just use quoted-insert if I ever really need comma. I also kind of think that using a modifier could be more ideal here if I had available thumb keys or a better dual-role program. Thanks for the detailed response.
If ivy isn't more amendable to a modal workflow then I will stick with helm for now. Also, what about your IRC client choice? Emacs has a few options for this, why did you choose circe over the rest?GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. See also ace-jump-mode and vim-easymotion - avy uses the same idea. The advantage over the previous one is less candidates for the tree search. And it's not too inconvenient to enter two consecutive chars instead of one. This is a more flexible version of avy-goto-char First part works similarly to isearch : you type a query and it's highlighted dynamically on the screen.
When you stop typing for avy-timeout-seconds 0. As you're inputting characters, you can use C-h backspace or DEL delete to forget the last typed character and RET to end the input sequence immediately and select a candidate. You can actually replace the M-g g binding of goto-linesince if you enter a digit for avy-goto-lineit will switch to goto-line with that digit already entered.
Compared to avy-goto-word-1there are a lot more candidates. But at a least there's not need to input the initial char. It will bind, for example, avy-isearch to C-' in isearch-mode-mapso that you can select one of the currently visible isearch candidates using avy.
See the comprehensive custom variable list on the defcustom wiki page. See how to write your own avy commands on the custom-commands wiki page.
Any legally significant contributions can only be accepted after the author has completed their paperwork. Please see the request form if you want to proceed. The copyright assignment isn't a big deal, it just says that the copyright for your submitted changes to Emacs belongs to the FSF.
This assignment works for all projects related to Emacs.
Ivy User Manual
To obtain it, you need to send one email, then send one letter if you live in the US, it's digitaland wait for some time in my case, I had to wait for one month. The basic code style guide is to use setq indent-tabs-mode nil. It is provided for you in.
Before submitting the change, run make compile and make test to make sure that it doesn't introduce new compile warnings or test failures. Also run make checkdoc to see that your changes obey the documentation guidelines.
Use your own judgment for the commit messages, I recommend a verbose style using magit-commit-add-log.
Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. Jump to things in Emacs tree-style. Emacs Lisp Makefile. Emacs Lisp Recently, I have seen a lot of Emacs users showing interest in Ivy. Most of them already know Helm or Ido. When someone asked Helm or Ivy?
Helm and Ivy are completion frameworks. It means they are tools that the Emacs ecosystem can use to narrow the field of possibilities after a given user input. The most common example that comes to mind is searching for files.
Helm and Ivy helps the user to quickly search for files. They are frameworks. It means they can be used by much more complex commands that needs narrowing or completion. As an example, Helm has a command that emulate the google search bar, and get google suggests as you type helm-google-suggest. Here I want to compare the tools, from a user point of view. What I mean by user perspective is that I want to compare Ivy and Helm without knowing how they works internally. I do not know enough elisp to be able to compare their internals.
But I used them both, and can give you my feedback on how I, as a userfelt the difference between the tools. And finally, why I switched from Helm to Ivy. I want to start with Helm. When I used Spacemacs, I learned the Helm way. I learned how to use it, how to customize it, and how to tailor it to my needs. I guess I would qualify as a medium-level Helm user.
I have read this post and this one and this wiki tooand used it every day for one year. Helm is a very mature tool. According to its git commit history, work on Helm really started around At the time of writing, the official Helm git repository has 26k lines of emacs-lisp code. You can do anything with Helm 1. Its main strength is that you can integrate and wrap many Emacs behavior with it.
You can build an interface totally centered around Helm, just like Spacemacs did. It allows for a really really consistent interface. Everything goes through Helm. You can search files, search buffer, search colors, search project, search recently edited files, search system process, search music, search the internet, search completion, search snippets, search regexp, search commands, documentation, a-propos, infos, … You can manage your project with Helm-projectile, a nice wrapping around Projectile.
You can generate gitignore with gitignore. You can manage your bibliography with Helm-bibtex. You can browse Firefox bookmarks.
One feature I want to highlight, based on feedbacks from tuhdo here on Redditis that Helm does not use the minibuffer 2while Ivy does. So it can be configured to open always in the currently opened window. It is a very neat feature for users with large or ultrawide monitors.
Eyes do not have to travel back and forth to the minibuffer: completion results are always printed in the same window. The end result is a very convenient tool to use, as the great majority of Spacemacs users can tell you.Helm may be the most flagrant example of a terrible package that remains inexplicably popular. I haven't uninstalled it yet, because there are a few packages that use helm that don't have ido equivalents yet, but I try to minimize my usage of it as much as possible.
Issues include: - Significant performance issues - Constant bugs - updates often break the package completely, especially if you're using the melpa version melpa is another rant for another time - standard melpa is totally brain-dead - An atrocious version of "fuzzy matching" you have to separate terms with spaces, which are then turned into ".
M-x, and such is unsorted.
Ivy, Counsel and Swiper
Not badly sorted - un sorted. This is fine for some projects, but total control of my editing experience is the primary reason I use Emacs in the first place. I recommend against using helm for completing-read unequivocally. I can't say that I have experienced all of these issues myself after using helm for about a year. I haven't really noticed bugs with Helm.
It gives you real fuzzy matching, much better than the default helm matching. Also, helm-mini is a better option for a buffer switcher. Ah, helm-flx didn't exist when I quit helm, and flx-ido did. Question: does helm-flx sort results, or does it just throw back an unsorted list of matching entries, like normal helm?
I consider the sorting an even bigger and more ridiculous drawback than the matching. I haven't used helm-M-x. That may be better - but it doesn't solve the problem that everything else using completing-read is still on normal helm. I typically use a small emacs window next to a terminal or few - I don't run terminals in emacs and browser in my tiling wm.
Helm makes this nearly impossible, since it's very difficult to control where helm windows will go without using popwin horrifically buggy or shackle I never tried this, as I'd already moved to ido by the time it showed upbecause of helm's nonstandard way of doing things.
With regards to the bugginess, I can anecdotally say that I've seen more asking about problems with helm on the emacs IRC channel than any other package - and there are several of equivalent popularity magit, for instance.
I also experienced numerous bugs while I was using helm, including some that broke my emacs config. The only package I've had break my config more than helm is org, but org generally works quite well if you can get it loaded without problems.
For me, typing "tetri" has "tetris" listed first, with the next result matching all of those characters in a different command, and each of the following results being less and less accurate matches. There is no alphabetical sorting, though. Popwin is very annoying for me, too. I'll look into trying out shackle.
There is also a less-popular completion system for emacs called ivy. I don't know how it stacks up to ido or helm, but perhaps that one is also worth checking out. Helm doesn't just insert. If one searches for "file rename" Helm will find rename-file, while typing "filerename" in ido it will not find it. Helm is already criticized by many ido fans for having too many features, now it's also criticized by ido fans for not having more despite it having way more than ido.
I prefer ido, but helm is a good tool that's perfectly usable that tons of people like and does a lot more than ido. People would actually fix bugs and add functionality in a reasonable way rather than hacky extensions like ido-hacks. Still, it does use a strange, difficult-to-use form of matching, and does not sort the results by default. I use flx-ido, which supports out-of-order matching to some degree. This is not a knock on helm, as helm now has helm-flx, but nevertheless I consider ido's default much better than helm's, as ido at least sorts the results.
I may have made this point badly, but it's not about features, it's about letting me use those features the way I want. I don't recall the exact discussion, as this was over a year ago, but I asked for the ability to change a specific default and was told "that's the wrong way to do it" - and I'm not the only one who's recounted something like that happening in the project.
That's unacceptable for something I use in Emacs - I want to be able to change anything.Ivy is a completion method that's similar to Idobut with emphasis on simplicity and customizability. The current release constitutes of commits and 8 months of progress since 0. Many issues ranging from to were fixed. The number of people who contributed code as grown to 91 ; thanks, everyone! Many improvements are incremental and don't require any extra code to enable. I'll go over a few selected features that require a bit of information to make a good use of them.
After this, your current input becomes selectable as a candidate. Press C-p when you're on the first candidate to select your input instead. This solves the long standing issue of e. Previously, the only solution was to use C-M-j. It's still available, but now you can also select your input with C-p and press RET. Here's an example use-case: search your source code for a variable name with e.
Suppose you get 10 results, only 4 of which are interesting. You can now delete the uninteresting ones with C-d. Then maybe check off the others with C-d as well as you complete them one by one. A sort of a TODO list. Here's the list of new defcustom or defvar that might be interesting to review:.
Please consider joining my 74 patrons to give me the opportunity to work on Free Software a lot more. Ivy 0. Overview The current release constitutes of commits and 8 months of progress since 0. Details on changes Changelog. Selectable prompt Off by default. You can turn it on like so: setq ivy-use-selectable-prompt t.