vim

vim-ckgrep

Search CHEMKIN reaction mechanisms by chemistry from Vim or Neovim: :Ckgrep runs ckgrep and puts the matching reaction lines in the quickfix list — <Enter> jumps to the hit, :cnext/:cprev cycle through matches.

:Ckgrep "OH+CH4="                   " search the current buffer's file
:Ckgrep! "OH+CH4="                  " search the whole directory, recursively
:Ckgrep -e "H+O2=OH+O" kinetics/    " explicit files/dirs always win
:Ckgrep -c "CH3O2=CH2O+OH" mech.CKI

Requires the ckgrep binary (prebuilt archives on the releases page). If it is not on your $PATH:

let g:ckgrep_executable = '/opt/ckgrep/bin/ckgrep'

Install

The plugin lives in the editor/vim subdirectory of the ckgrep repository.

From a CMake install

Building ckgrep from source with -DINSTALL_VIM_PLUGIN=ON installs this plugin into <prefix>/share/ckgrep/vim/ alongside the binary in <prefix>/bin/, so a plugin manager can point straight at the installed prefix instead of a separate git checkout:

cmake -S . -B build -DCMAKE_BUILD_TYPE=Release -DINSTALL_VIM_PLUGIN=ON
cmake --build build
cmake --install build --prefix "$HOME/.tools/ckgrep"

With lazy.nvim:

{
  dir = vim.fn.expand("~/.tools/ckgrep/share/ckgrep/vim"),
  name = "vim-ckgrep",
  cmd = "Ckgrep",
  init = function()
    vim.g.ckgrep_executable = vim.fn.expand("~/.tools/ckgrep/bin/ckgrep")
  end,
}

From a git checkout

With vim-plug:

Plug 'tdinelli/ckgrep', { 'rtp': 'editor/vim' }

With lazy.nvim:

{
  "tdinelli/ckgrep",
  config = function()
    vim.opt.rtp:append(vim.fn.stdpath("data") .. "/lazy/ckgrep/editor/vim")
  end,
}

Manually (Vim 8+ native packages):

git clone https://github.com/tdinelli/ckgrep ~/ckgrep-src
mkdir -p ~/.vim/pack/plugins/start
ln -s ~/ckgrep-src/editor/vim ~/.vim/pack/plugins/start/vim-ckgrep

Manually (neovim)

git clone https://github.com/tdinelli/ckgrep ~/ckgrep-src
mkdir -p ~/.local/share/nvim/site/pack/plugins/start
ln -s ~/ckgrep-src/editor/vim ~/.local/share/nvim/site/pack/plugins/start/vim-ckgrep

Then :helptags ALL once, and :help ckgrep for the documentation.