Christoph Frick - ofnir.net - Open Source Consultant, Software Developer and System Administrator (Posts about Vim)

Using gocr and flameshot to get text from screenshots

Christoph Frick - ofnir.net — Wed, 07 Jul 2021 22:00:00 GMT

From time to time I have the need to get text from an image, when someone shares a screen-shot, but not the URL in it or when I want to copy code from a stopped youtube video. So ideally I want to select a region of my screen and turn that into text.

First install gocr and flameshot. Then create a script, that runs gocr and opens the resulting text (in my case I want to open a terminal with vim). E.g. ~/bin/ocr:

#!/bin/sh
rxvt -e sh -c "gocr -i \"$1\" | vim -"

Then create a "desktop" entry for flameshot to pick up. ~/.local/share/applications/ocr.desktop:

[Desktop Entry]
Version=1.0
Type=Application
Terminal=false
Exec=.../bin/ocr %f
Name=OCR
Categories=Graphics;

(Note, that the path there is absolute, or you have to figure out, what works for you... I couldn't be bothered to look into this)

Then start flameshot gui (I have that on my Print Screen-key), select the region to OCR, press CTRL-o (or click the button to open the screenshot with an application), then pick the OCR-Application from the desktop entry, which then opens the text.

Figwheel with Vim-Fireplace 2.0

Christoph Frick - ofnir.net — Thu, 01 Aug 2019 22:00:00 GMT

With recent changes in Cider and the new Vim-Fireplace 2.0 release, let's update the setup for it.

In a project created by e.g. lein new figwheel hello-world, add the new setup for Ciders Piggieback:

:profiles {:dev {:dependencies [[cider/piggieback "0.4.1"]]
                 :repl-options {:nrepl-middleware [cider.piggieback/wrap-cljs-repl]}}}

Merge this settings with existing code from the template. Note, that both the group of the artifact and the namespace for Piggieback changed.

With the template you can not open Vim, start the REPL, and run (fig-start).

Now with Vim-Fireplace 2.0 to work via Piggieback, you call:

:CljEval (cider.piggieback/cljs-repl (figwheel-sidecar.repl-api/repl-env))

Fennel Vim setup

Christoph Frick - ofnir.net — Sun, 07 Apr 2019 22:00:00 GMT

Since this gets asked in #fennel from time to time, here is my Vim setup for Fennel:

call plug#begin('~/.vim/plugged')
" ...
Plug 'guns/vim-sexp', {'for': ['fennel']}
Plug 'tpope/vim-sexp-mappings-for-regular-people', {'for': ['fennel']}
Plug 'kovisoft/paredit', {'for': ['fennel']}
Plug 'bakpakin/fennel.vim', {'for': 'fennel'}
" ...
call plug#end()

let g:sexp_enable_insert_mode_mappings = 0
let g:sexp_filetypes = 'fennel'

See https://gist.github.com/christoph-frick/ddba9ea1bdccef1972cd4cec9b453a8b

Vim-Fireplace now supports code formatting via Cider/clj-fmt

Christoph Frick - ofnir.net — Thu, 04 May 2017 22:00:00 GMT

Finally my patch to access the clj-fmt feature in the cider-nrepl made into the master branch. The feature is mapped to the formatexpr of vim, which is accessed via gq. So to clean up the mess you just created, press gqaF (format the outermost form).

https://github.com/tpope/vim-fireplace/commit/2193122e13fdf9e9af30475d8d9a90746234c1d8

Use Vim-Fireplace with Figwheel greater 0.4

Christoph Frick - ofnir.net — Sat, 17 Oct 2015 22:00:00 GMT

I have put together an example repo, how to use vim-fireplace with figwheel after the 0.4 release. This release removed cider and piggieback, so we have to add them back.

Add this to the according sections of your project.clj:

;; add nrepl middleware for fireplace
:figwheel {:nrepl-middleware ["cider.nrepl/cider-middleware"
                              "cemerick.piggieback/wrap-cljs-repl"]}
;; add piggieback for fireplace
:profiles {:dev {:dependencies  [[com.cemerick/piggieback "0.2.1"]]
                 :repl-options {:nrepl-middleware [cemerick.piggieback/wrap-cljs-repl]}}}

Make the Figwheel REPL work in vim-fireplace

Christoph Frick - ofnir.net — Mon, 08 Jun 2015 22:00:00 GMT

I just have created a pull request with Vim-Fireplace, that allows passing down an expression to :Piggieback. This allows using the Figwheel REPL without much hassle.

First follow the instructions to create a Figwheel project. E.g. lein new figwheel example-project. Check the generated project.clj file and remove the comment on the line, that sets the nREPL port (:nrepl-port 7888, pick any port number you like).

To make Vim-Fireplace pick up the nREPL port create an .nrepl-port file containing the port number. E.g. echo 7888 > .nrepl-port. Otherwise connect from the Vim command line with :Connect nrepl://localhost:7888 (or follow the dialog with just :Connect).

In Vim then open any ClojureScript file (e.g. the generated src/example_project/core.cljs) and then enter at the Vim command prompt:

:Piggieback! (do (require 'figwheel-sidecar.repl-api) (figwheel-sidecar.repl-api/cljs-repl))

Now saving ClojureScript or CSS files will automatically (and statefully) reload in the browser. And all the regular things in Vim-Fireplace like evaluating expressions or requesting the docs work too.

For repeatability add this alias in your .vimrc (or in an after script for Clojure or Vim-Fireplace):

command! Figwheel :Piggieback! (do (require 'figwheel-sidecar.repl-api) (figwheel-sidecar.repl-api/cljs-repl))

Change what vim considers a keyword in fireplace for clojure

Christoph Frick - ofnir.net — Tue, 19 May 2015 22:00:00 GMT

Clojure allows for a lot more chars in a symbol than many other languages. Vim-Fireplace takes care for you by adding lots of the often used additional chars (e.g. ? is the postfix for predicates, symbols starting with : are keywords).

If you are not happy with the choices, you can remove/add simply by creating a ~/.vim/after/ftplugin/clojure.vim file and manipulate the iskeyword there. E.g. set iskeyword-=/ will make the / char a barrier, where word motions stop. Check with calling set iskeyword on the command prompt what is configured.