Improved Helm module (#4561)

* Improved Helm module

+ Added README
+ Added posframe
+ Added icons

* Requested changes

* Remove helm-posframe and merge upstream

* Removed redundant line
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Ellis Kenyő 2021-02-24 16:02:32 +00:00 committed by GitHub
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@ -0,0 +1,191 @@
#+TITLE: completion/helm
#+DATE: January 22, 2021
#+SINCE: v2.0
#+STARTUP: inlineimages
* Table of Contents :TOC_3:noexport:
- [[#description][Description]]
- [[#module-flags][Module Flags]]
- [[#plugins][Plugins]]
- [[#prerequisites][Prerequisites]]
- [[#install][Install]]
- [[#macos][MacOS]]
- [[#arch-linux][Arch Linux]]
- [[#opensuse][openSUSE]]
- [[#features][Features]]
- [[#jump-to-navigation][Jump-to navigation]]
- [[#project-search--replace][Project search & replace]]
- [[#search][Search]]
- [[#replace][Replace]]
- [[#in-buffer-searching][In-buffer searching]]
- [[#helm-integration-for-various-completing-commands][Helm integration for various completing commands]]
- [[#general][General]]
- [[#jump-to-files-buffers-or-projects][Jump to files, buffers or projects]]
- [[#search-1][Search]]
- [[#configuration][Configuration]]
- [[#icons][Icons]]
- [[#posframe][Posframe]]
- [[#troubleshooting][Troubleshooting]]
* Description
This module provides Helm integration for a variety of Emacs commands, as well as
a unified interface for project search and replace, powered by ripgrep.
#+begin_quote
I prefer ivy over ido for its flexibility. I prefer ivy over helm because it's
lighter, simpler and faster in many cases.
#+end_quote
Ivy is considered a first-class citizen in Doom, however it is still possible to use Helm if you so desire.
** Module Flags
+ =+fuzzy= Enables fuzzy completion for Helm searches.
+ =+childframe= Causes Helm to display in a floating child frame, above Emacs.
+ =+icons= Enables icons (supports both =all-the-icons= and =treemacs= icons)
** Plugins
+ [[https://github.com/emacs-helm/helm][helm]]
+ [[https://github.com/microamp/helm-rg][helm-rg]]
+ [[https://github.com/emacs-jp/helm-c-yasnippet][helm-c-yasnippet]]
+ [[https://github.com/tuhdo/helm-company][helm-company]]
+ [[https://github.com/emacs-helm/helm-describe-modes][helm-describe-modes]]
+ [[https://github.com/bbatsov/helm-projectile][helm-projectile]]
+ [[https://github.com/abo-abo/swiper-helm][helm-swiper]]
+ [[https://github.com/emacs-helm/helm-descbinds][helm-descbinds]]
+ [[https://github.com/PythonNut/helm-flx][helm-flx]]* (=+fuzzy=)
+ [[https://github.com/tumashu/helm-posframe][helm-posframe]]* (=+childframe=)
+ [[https://github.com/emacs-helm/helm-org][helm-org]]* (=:lang org=)
+ [[https://github.com/yyoncho/helm-icons][helm-icons]]* (=+icons=)
* Prerequisites
This module depends on:
+ [[https://github.com/BurntSushi/ripgrep][ripgrep]] (rg)
** Install
*** MacOS
#+BEGIN_SRC sh
brew install ripgrep
#+END_SRC
*** Arch Linux
#+BEGIN_SRC sh :dir /sudo::
sudo pacman --needed --noconfirm -S ripgrep
#+END_SRC
*** openSUSE
#+BEGIN_SRC sh :dir /sudo::
sudo zypper install ripgrep
#+END_SRC
* Features
Much like Ivy, Helm is a /large/ framework and as such
covering everything is not in scope, however a number
of Doom-specific features are shown below:
** Jump-to navigation
Similar to Ivy, this module provides an interface to
navigate within a project using =projectile=:
| Keybind | Description |
|------------------+-------------------------------------|
| =SPC p f=, =SPC SPC= | Jump to file in project |
| =SPC f f=, =SPC .= | Jump to file from current directory |
| =SPC s i= | Jump to symbol in file |
** Project search & replace
This module also provides interacetive text search and replace using ripgrep
*** Search
| Keybind | Description |
|---------+--------------------------|
| =SPC s p= | Search project |
| =SPC s P= | Search another project |
| =SPC s d= | Search this directory |
| =SPC s D= | Search another directory |
Prefixing these keys with the universal argument (=SPC u= for evil users; =C-u=
otherwise) changes the behavior of these commands, instructing the underlying
search engine to include ignored files.
This module also provides Ex Commands for evil users:
| Ex command | Description |
|------------------------+------------------------------------------------------------------|
| ~:pg[rep][!] [QUERY]~ | Search project (if ~!~, include hidden files) |
| ~:pg[rep]d[!] [QUERY]~ | Search from current directory (if ~!~, don't search recursively) |
The optional `!` is equivalent to the universal argument for the previous
commands.
*** Replace
These keybindings are available while a search is active:
| Keybind | Description |
|-----------+-----------------------------------------------|
| =C-c C-o= | Open a buffer with your search results |
| =C-c C-e= | Open a writable buffer of your search results |
| =C-SPC= | Preview the current candidate |
| =C-RET= | Open the selected candidate in other-window |
Changes to the resulting wgrep buffer (opened by =C-c C-e=) can be committed
with =C-c C-c= and aborted with =C-c C-k= (alternatively =ZZ= and =ZQ=, for evil
users).
** In-buffer searching
The =swiper= package provides an interactive buffer search powered by helm. It
can be invoked with:
+ =SPC s s= (~swiper-isearch~)
+ =SPC s S= (~swiper-isearch-thing-at-point~)
+ =SPC s b= (~swiper~)
+ ~:sw[iper] [QUERY]~
A wgrep buffer can be opened from swiper with =C-c C-e=.
** Helm integration for various completing commands
Helm also has a number of overrides for built-in functionality:
*** General
| Keybind | Description |
|------------+---------------------------|
| =M-x=, =SPC := | Smarter, smex-powered M-x |
| =SPC '= | Resume last ivy session |
*** Jump to files, buffers or projects
| Keybind | Description |
|------------------+---------------------------------------|
| =SPC RET= | Find bookmark |
| =SPC f f=, =SPC .= | Browse from current directory |
| =SPC p f=, =SPC SPC= | Find file in project |
| =SPC f r= | Find recently opened file |
| =SPC p p= | Open another project |
| =SPC b b=, =SPC ,= | Switch to buffer in current workspace |
| =SPC b B=, =SPC <= | Switch to buffer |
*** Search
| Keybind | Description |
|---------+-------------------------------------------|
| =SPC p t= | List all TODO/FIXMEs in project |
| =SPC s b= | Search the current buffer |
| =SPC s d= | Search this directory |
| =SPC s D= | Search another directory |
| =SPC s i= | Search for symbol in current buffer |
| =SPC s p= | Search project |
| =SPC s P= | Search another project |
| =SPC s s= | Search the current buffer (incrementally) |
* Configuration
** Icons
Icons are now included, and support 2 providers ([[https://github.com/domtronn/all-the-icons.el][all-the-icons]] and [[https://github.com/Alexander-Miller/treemacs][treemacs]]).
By default, to maintain consistency we use =all-the-icons=; however if you wish
to modify this you can do so using the below snippet:
#+begin_src emacs-lisp
(after! helm
(setq helm-icons-provider 'treemacs))
#+end_src
** Posframe
* Troubleshooting

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@ -1,14 +1,14 @@
;;; completion/helm/config.el -*- lexical-binding: t; -*-
;; Posframe (requires +childframe)
(defvar +helm-posframe-handler #'+helm-poshandler-frame-center-near-bottom-fn
"The function that determines the location of the childframe. It should return
a cons cell representing the X and Y coordinates. See
(defvar +helm-posframe-handler #'posframe-poshandler-frame-center
"The function that determines the location of the childframe.
It should return a cons cell representing the X and Y coordinates. See
`posframe-poshandler-frame-center' as a reference.")
(defvar +helm-posframe-text-scale 1
"The text-scale to use in the helm childframe. Set to nil for no scaling. Can
be negative.")
"The text-scale to use in the helm childframe. Set to nil for no scaling.
Can be negative.")
(defvar +helm-posframe-parameters
'((internal-border-width . 8)
@ -16,8 +16,7 @@ be negative.")
(height . 0.35)
(min-width . 80)
(min-height . 16))
"TODO")
"Default parameters for the helm childframe.")
;;
;;; Packages
@ -189,3 +188,12 @@ be negative.")
(use-package! helm-descbinds
:hook (helm-mode . helm-descbinds-mode))
(use-package! helm-icons
:after helm
:when (featurep! +icons)
:init
(setq helm-icons-provider 'all-the-icons)
:config
(helm-icons-enable))

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@ -16,4 +16,6 @@
(package! posframe :pin "efd7ea490defc53a5b78e7469a3a35d225b766cc"))
(when (featurep! :lang org)
(package! helm-org :pin "b7a18dfc17e8b933956d61d68c435eee03a96c24"))
(when (featurep! +icons)
(package! helm-icons :pin "dbc5c41da07d5d182f0cd1ea46fab47085fe070d"))
(package! helm-descbinds :pin "b72515982396b6e336ad7beb6767e95a80fca192")