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*mini.comment* Comment lines
*MiniComment*
MIT License Copyright (c) 2021 Evgeni Chasnovski
==============================================================================
Features:
- Commenting in Normal mode respects |count| and is dot-repeatable.
- Comment structure by default is inferred from 'commentstring': either
from current buffer or from locally active tree-sitter language (only on
Neovim>=0.9). It can be customized via `options.custom_commentstring`
(see |MiniComment.config| for details).
- Allows custom hooks before and after successful commenting.
- Configurable options for some nuanced behavior.
What it doesn't do:
- Block and sub-line comments. This will only support per-line commenting.
- Handle indentation with mixed tab and space.
- Preserve trailing whitespace in empty lines.
Notes:
- To use tree-sitter aware commenting, global value of 'commentstring'
should be `''` (empty string). This is the default value in Neovim>=0.9,
so make sure to not set it manually.
# Setup~
This module needs a setup with `require('mini.comment').setup({})` (replace
`{}` with your `config` table). It will create global Lua table
`MiniComment` which you can use for scripting or manually (with
`:lua MiniComment.*`).
See |MiniComment.config| for `config` structure and default values.
You can override runtime config settings locally to buffer inside
`vim.b.minicomment_config` which should have same structure as
`MiniComment.config`. See |mini.nvim-buffer-local-config| for more details.
# Disabling~
To disable core functionality, set `vim.g.minicomment_disable` (globally) or
`vim.b.minicomment_disable` (for a buffer) to `true`. Considering high number
of different scenarios and customization intentions, writing exact rules
for disabling module's functionality is left to user. See
|mini.nvim-disabling-recipes| for common recipes.
------------------------------------------------------------------------------
*MiniComment.setup()*
`MiniComment.setup`({config})
Module setup
Parameters~
{config} `(table|nil)` Module config table. See |MiniComment.config|.
Usage~
`require('mini.comment').setup({})` (replace `{}` with your `config` table)
------------------------------------------------------------------------------
*MiniComment.config*
`MiniComment.config`
Module config
Default values:
>
MiniComment.config = {
-- Options which control module behavior
options = {
-- Function to compute custom 'commentstring' (optional)
custom_commentstring = nil,
-- Whether to ignore blank lines
ignore_blank_line = false,
-- Whether to recognize as comment only lines without indent
start_of_line = false,
-- Whether to ensure single space pad for comment parts
pad_comment_parts = true,
},
-- Module mappings. Use `''` (empty string) to disable one.
mappings = {
-- Toggle comment (like `gcip` - comment inner paragraph) for both
-- Normal and Visual modes
comment = 'gc',
-- Toggle comment on current line
comment_line = 'gcc',
-- Define 'comment' textobject (like `dgc` - delete whole comment block)
textobject = 'gc',
},
-- Hook functions to be executed at certain stage of commenting
hooks = {
-- Before successful commenting. Does nothing by default.
pre = function() end,
-- After successful commenting. Does nothing by default.
post = function() end,
},
}
<
# Options ~
## Custom commentstring ~
`options.custom_commentstring` can be a function customizing 'commentstring'
option used to infer comment structure. It is called once before every
commenting action with the following arguments:
- `ref_position` - position at which to compute 'commentstring' (might be
relevant for a text with locally different commenting rules). Its structure
is the same as `opts.ref_position` in |MiniComment.toggle_lines()|.
Its output should be a valid 'commentstring' (string containing `%s`).
If not set or the output is `nil`, |MiniComment.get_commentstring()| is used.
For example, this option can be used to always use buffer 'commentstring'
even in case of present active tree-sitter parser: >
require('mini.comment').setup({
options = {
custom_commentstring = function() return vim.bo.commentstring end,
}
})
------------------------------------------------------------------------------
*MiniComment.operator()*
`MiniComment.operator`({mode})
Main function to be mapped
It is meant to be used in expression mappings (see |map-<expr>|) to enable
dot-repeatability and commenting on range. There is no need to do this
manually, everything is done inside |MiniComment.setup()|.
It has a somewhat unintuitive logic (because of how expression mapping with
dot-repeatability works): it should be called without arguments inside
expression mapping and with argument when action should be performed.
Parameters~
{mode} `(string|nil)` Optional string with 'operatorfunc' mode (see |g@|).
Return~
`(string|nil)` 'g@' if called without argument, '' otherwise (but after
performing action).
------------------------------------------------------------------------------
*MiniComment.toggle_lines()*
`MiniComment.toggle_lines`({line_start}, {line_end}, {opts})
Toggle comments between two line numbers
It uncomments if lines are comment (every line is a comment) and comments
otherwise. It respects indentation and doesn't insert trailing
whitespace. Toggle commenting not in visual mode is also dot-repeatable
and respects |count|.
Before successful commenting it executes `config.hooks.pre`.
After successful commenting it executes `config.hooks.post`.
If hook returns `false`, any further action is terminated.
# Notes ~
- Comment structure is inferred from buffer's 'commentstring' option or
local language of tree-sitter parser (if active; only on Neovim>=0.9).
- Currently call to this function will remove marks inside written range.
Use |lockmarks| to preserve marks.
Parameters~
{line_start} `(number)` Start line number (inclusive from 1 to number of lines).
{line_end} `(number)` End line number (inclusive from 1 to number of lines).
{opts} `(table|nil)` Options. Possible fields:
- <ref_position> `(table)` - A two-value array with `{ row, col }` (both
starting at 1) of reference position at which 'commentstring' value
will be computed. Default: `{ line_start, 1 }`.
------------------------------------------------------------------------------
*MiniComment.textobject()*
`MiniComment.textobject`()
Select comment textobject
This selects all commented lines adjacent to cursor line (if it itself is
commented). Designed to be used with operator mode mappings (see |mapmode-o|).
Before successful selection it executes `config.hooks.pre`.
After successful selection it executes `config.hooks.post`.
If hook returns `false`, any further action is terminated.
------------------------------------------------------------------------------
*MiniComment.get_commentstring()*
`MiniComment.get_commentstring`({ref_position})
Get 'commentstring'
This function represents default approach of computing relevant
'commentstring' option in current buffer. Used to infer comment structure.
It has the following logic:
- (Only on Neovim>=0.9) If there is an active tree-sitter parser, try to get
'commentstring' from the local language at `ref_position`.
- If first step is not successful, use buffer's 'commentstring' directly.
Parameters~
{ref_position} `(table)` Reference position inside current buffer at which
to compute 'commentstring'. Same structure as `opts.ref_position`
in |MiniComment.toggle_lines()|.
Return~
`(string)` Relevant value of 'commentstring'.
vim:tw=78:ts=8:noet:ft=help:norl: