This thin plugin makes it easy to send code to a REPL (read-evaluate-print loop) running within vim or nvim. Some advantages of this plugin over some of the alternatives (such as iron.nvim) are the following:

• This plugin is written and can be configured in viml.

• The cursor does not move when a code chunk is sent to the REPL.

• If vim-highlightedyank is installed, motions sent to the REPL are highlighted.

• If not explicitly opened by <Plug>(ripple_open_repl), the REPL opens automatically once a code chunk is sent.

(Click to enlarge.)

Using vim-plug:

Plug 'urbainvaes/vim-ripple'

" Optional dependency
Plug 'machakann/vim-highlightedyank'

New REPLs can be defined in the dictionary g:ripple_repls. These definitions take precedence over the default REPLs defined in the plugin, which are listed below. In the dictionary, the keys are filetypes and the values are either of the following:

• A string containing the command to start the REPL (e.g. bash, guile).

• A list of three string entries and a boolean entry: the first string must contain the command to start the REPL; the second and third must contain strings to prepend and append to code sent to the REPL, respectively. This is sometimes necessary to enable sending several lines of code to the REPL at once. The fourth element of the list must be either 0 or 1, and it controls whether an additional <cr> should be appended to the code chunks that are followed by a blank line. (This can be useful to avoid the need to press <cr> manually in the terminal window. In ipython, for example, two <cr> are required to run an indented block.)

The current default is the following:

let s:default_repls = {
            \ "python": ["ipython", "\<c-u>\<esc>[200~", "\<esc>[201~", 1],
            \ "scheme": "guile",
            \ "sh": "bash"
            \ }

The functions are exposed via <Plug> mappings. If g:ripple_enable_mappings is set to 1, then additional mappings to keys are defined as follows:

If <Plug>(ripple_send_motion) is issued but no REPL is open, a REPL will open automatically. A mnemonic for yr is you run.

To disable th highlighting of code chunks sent to the REPL, simply let g:ripple_highlight = "". Highlighting works only when the plugin vim-highlightedyank is installed.

MIT