path: root/vim/.vim/vimrc

" Personal vimrc config file.
" Last Changed: 2019-01-27
" Author: Federico Igne <>
" License: This file is placed in the public domain.

" {{{1 TODO

" [ ] Change `errorformat` for Stack (Haskell compilation via `stack
"     build`)
"
" [ ] Different highlight for currently selected match (have a look at
"     the code in the comments:
"     https://www.reddit.com/r/vim/comments/ap9we4/vimsearchhi_highlight_the_current_search_result/
"
" [ ] Play with omnicomplete options
"     http://vim.wikia.com/wiki/Make_Vim_completion_popup_menu_work_just_like_in_an_IDE
"
" [ ] Integrate Omnicompletion for Haskell project. You should be able
"     to integrate it with tags.
"     http://vim.wikia.com/wiki/Omni_completion
"
" [ ] Integrate linting for Haskell project. Have a look at
"     Interesting gist: https://gist.github.com/romainl/ce55ce6fdc1659c5fbc0f4224fd6ad29
"     HLint for haskell: https://hackage.haskell.org/package/hlint
"
" [ ] Have a look at these autoclosing mappings...might be interesting.
"     https://medium.com/vim-drops/custom-autoclose-mappings-1ff90f45c6f5


" {{{1 GENERAL SETTINGS

" Don't open Vim in vi-compatibility mode.
" Note: this is implicit when a user .vimrc file is detected.
" set nocompatible

" Set encoding to utf8.
if has('multi_byte')
    set encoding=utf8
endif

" Enable modeline capabilities
set modeline

" Set file format to `unix' (set newline encoding to <NL>).
set fileformat=unix

" May use `dos' file format if <CR><NL> is detected as newline
" encoding.
set fileformats=unix,dos

" Automatically update a file whenever it is detected to have been
" changed outside of Vim.
" NOTE: you need something like
"   https://github.com/tmux-plugins/vim-tmux-focus-events
" in order for autoread to work in terminal Vim.
set autoread

" Automatically save changes when switching buffers (and some other
" commands). Use `autowriteall` if you want the hardcore version.
set autowrite

" A buffer becomes hidden when it is abandoned.
set hidden

" Do not redraw the screen while executing macros or other (not explicitly
" typed) commands. This speeds up the iteration of macros and avoids
" screen flickering/lag.
set lazyredraw

" If in `&updatetime` milliseconds nothing is typed the swap file will
" be written to disk. Also used for the `CursorHold` autocommand event.
set updatetime=2000

" Reduce the time Vim will try to recognize commands consisting of
" a sequence of keys. In particular `timeoutlen` is the timeout for
" mappings, `ttimeoutlen` is the timeout for key codes (like <Esc>).
set timeoutlen=2000 ttimeoutlen=100

" Remove beep or visual effect on errors.
set noerrorbells
set novisualbell t_vb=


" {{{1 COLORS/INTERFACE

" Cursor shape:
" * set cursor to a steady block in normal mode;
" * set cursor to a blinking underline in insert mode.
" Possible values:
" 0  -> blinking block.
" 1  -> blinking block (default).
" 2  -> steady block.
" 3  -> blinking underline.
" 4  -> steady underline.
" 5  -> blinking bar (xterm).
" 6  -> steady bar (xterm).
let &t_EI = "\<Esc>[2 q"
let &t_SI = "\<Esc>[3 q"

" Resets cursor to terminal default
augroup stCursor
    autocmd!
    autocmd VimLeave * silent !echo -ne "\e[6 q"
augroup END

" Leave n lines above/below cursor when scrolling.
" If set to a very large value the cursor line will always be in the
" middle of the window (except at the start or end of the file).
set scrolloff=999

" Leave n chars on the left/right of the cursor when scrolling.
" If set to a very large value the cursor will always be in the
" middle of the window (except when close to the beginning of the line).
set sidescrolloff=20

" Remove numbers. `Hybrid' number mode (show relative numbers with
" current line on cursor position) can be toggles with `<leader>in`
set nonumber norelativenumber

" Show typed command on the right side of the status bar.
if has('cmdline_info')
    set showcmd
endif

" Do not show current mode in status bar. Basically remove the
" "-- INSERT --" status string, which is redundant when using a
" statusline plugin.
set noshowmode

" Use true colors or fall back to 256 colors.
if has('termguicolors')
    " Use 'guifg' and 'guibg' attributes in the terminal (true color).
    set termguicolors
    " Necessary escape codes
    " https://www.reddit.com/r/vim/comments/5416d0/true_colors_in_vim_under_tmux/
    let &t_8f = "\<Esc>[38;2;%lu;%lu;%lum"
    let &t_8b = "\<Esc>[48;2;%lu;%lu;%lum"
else
    set t_Co=256
endif

" Any modification to the highlights groups needs to be done here,
" before setting the colorsheme. This is because most colorschemes clear
" the highlight groups before setting them... this includes groups like
" User1-9. Setting this hook, it's possible to set custom colors
" everytime a colorscheme is reloaded.

augroup CustomColors
    autocmd!
    " Statusline
    autocmd ColorScheme * highlight clear StatusLine
    autocmd ColorScheme * highlight clear StatusLineNC
    autocmd ColorScheme * highlight clear StatusLineTerm
    autocmd ColorScheme * highlight clear StatusLineTermNC
    autocmd ColorScheme * highlight StatusLine ctermfg=248 ctermbg=239 guifg=#bdae93 guibg=#504945
    autocmd ColorScheme * highlight StatusLineNC ctermbg=237 ctermfg=246 guibg=#3c3836 guifg=#a89984
    autocmd ColorScheme * highlight StatusLineTerm ctermfg=248 ctermbg=239 guifg=#bdae93 guibg=#504945
    autocmd ColorScheme * highlight StatusLineTermNC ctermfg=08 ctermbg=237 guifg=#665c54 guibg=#3c3836
    autocmd ColorScheme * highlight User1 cterm=bold gui=bold ctermfg=248 ctermbg=239 guifg=#bdae93 guibg=#504945
    autocmd ColorScheme * highlight User2 cterm=italic gui=italic ctermfg=248 ctermbg=239 guifg=#bdae93 guibg=#504945
    autocmd ColorScheme * highlight User3 cterm=bold gui=bold ctermfg=237 ctermbg=248 guifg=#3c3836 guibg=#bdae93
    " Search matches
    autocmd ColorScheme * highlight clear IncSearch
    autocmd ColorScheme * highlight IncSearch ctermfg=00 ctermbg=03 guifg=#282828 guibg=#fabd2f
    autocmd ColorScheme * highlight Search cterm=underline ctermbg=00 ctermfg=03 guibg=#282828 guifg=#fabd2f
    " Guides
    autocmd ColorScheme * highlight ColorColumn ctermbg=237 guibg=#3c3836
    autocmd ColorScheme * highlight CursorLine cterm=NONE ctermbg=237 gui=NONE guibg=#3c3836
    " Italics comments
    " NOTE: that the terminal must support italics for this option to work
    autocmd ColorScheme gruvbox highlight Comment cterm=italic
    " Visual
    autocmd ColorScheme * highlight clear Visual
    autocmd ColorScheme * highlight Visual ctermbg=239 guibg=#504945
    " Errors
    " Default highlight for errors is `reverse`d which looks terrible.
    autocmd ColorScheme gruvbox highlight clear Error
    autocmd ColorScheme gruvbox highlight clear ErrorMsg
    autocmd ColorScheme gruvbox highlight Error cterm=bold term=bold ctermbg=00 ctermfg=01 guibg=#282828 guifg=#fb4934
    autocmd ColorScheme gruvbox highlight link Errormsg Error
    " LSP signs and highlights.
    autocmd ColorScheme gruvbox highlight LspErrorText cterm=bold gui=bold ctermbg=237 ctermfg=01 guibg=#3c3836 guifg=#cc241d
    autocmd ColorScheme gruvbox highlight link LspErrorHighlight Error
    autocmd ColorScheme gruvbox highlight LspWarningText cterm=bold gui=bold ctermbg=237 ctermfg=03 guibg=#3c3836 guifg=#d79921
    autocmd ColorScheme gruvbox highlight LspWarningHighlight cterm=bold gui=bold ctermbg=00 ctermfg=03 guibg=#282828 guifg=#d79921
    autocmd ColorScheme gruvbox highlight LspInformationText cterm=bold gui=bold ctermbg=237 ctermfg=08 guibg=#3c3836 guifg=#928374
    autocmd ColorScheme gruvbox highlight LspInformationHighlight cterm=bold gui=bold ctermbg=00 ctermfg=07 guibg=#282828 guifg=#a89984
    autocmd ColorScheme gruvbox highlight link LspHintText LspInformationText
    autocmd ColorScheme gruvbox highlight link LspHintHighlight LspInformationHighlight
    " Spelling
    autocmd ColorScheme * highlight clear SpellBad
    autocmd ColorScheme * highlight clear SpellCap
    autocmd ColorScheme * highlight clear SpellLocal
    autocmd ColorScheme * highlight clear SpellRare
    autocmd ColorScheme * highlight SpellBad cterm=underline gui=underline ctermbg=00 ctermfg=01 guibg=#282828 guifg=#cc241d
    autocmd ColorScheme * highlight SpellCap cterm=underline gui=underline ctermbg=00 ctermfg=03 guibg=#282828 guifg=#d79921
    autocmd ColorScheme * highlight SpellLocal cterm=underline gui=underline ctermbg=00 ctermfg=04 guibg=#282828 guifg=#458588
    autocmd ColorScheme * highlight link SpellRare SpellLocal
    " Allows alpha values for terminalbackground
    "autocmd ColorScheme * highlight Normal ctermbg=NONE
augroup END

" Also you need to teach Vim the terminal escape sequences for
" italics (insert '^[' with <CTRL-v><Esc> in Insert mode)
set t_ZH=
set t_ZR=

" Set colorscheme to gruvbox dark
set background=dark
colorscheme gruvbox

" Display whitespaces with some flavour
set list
" Remove eol default symbol
set listchars=
" Highlight eol (maybe consider moving this on specific filetypes that
" use soft wrapping, to avoid too much noise)
set listchars+=eol:¬
" Make tabs a bit more visible
set listchars+=tab:├─
" Highlight trailing spaces
set listchars+=trail:·
" Last/first character when the current line is longer that the window
" width
set listchars+=extends:»,precedes:«

" {{{1 STATUSLINE

if has('statusline')

    " Always show the statusline.
    set laststatus=2

    " Custom mode flags.
    let g:modeFlag={
        \ 'n'  : 'N',
        \ 'no' : 'N·Operator Pending',
        \ 'v'  : 'V',
        \ 'V'  : 'V·Line',
        \ '' : 'V·Block',
        \ 's'  : 'S',
        \ 'S'  : 'S·Line',
        \ '' : 'S·Block',
        \ 'i'  : 'I',
        \ 'ic' : 'I·Compl',
        \ 'ix' : 'I·XCompl',
        \ 'R'  : 'R',
        \ 'Rc' : 'R·Compl',
        \ 'Rv' : 'R·Virtual',
        \ 'Rx' : 'R·XCompl',
        \ 'c'  : 'C',
        \ 'cv' : 'E·Vim ',
        \ 'ce' : 'E',
        \ 'r'  : 'Prompt',
        \ 'rm' : 'More',
        \ 'r?' : 'Confirm',
        \ '!'  : 'Shell',
        \ 't'  : 'T'
        \}

    " Custom flag by name (overrides the mode flag).
    let g:nameFlag={
        \ '[Grammarous]' : 'Grammar'
        \}

    " Custom filetype flags (overrides the mode flag).
    let g:filetypeFlag={
        \ 'help'      : 'Help',
        \ 'qf'        : 'QFix',
        \ 'netrw'     : 'Netrw',
        \ 'fugitive'  : 'Gstatus',
        \ 'tagbar'    : 'TagBar',
        \ 'gitcommit' : 'Gcommit'
        \}

    " Special flags (overrides previous flags).
    " Currently support:
    "   'preview': displayed for a preview window.
    let g:specialFlag={
        \ 'preview' : 'Preview'
        \}

    " Some elements will be hidden if the window width falls below
    " `g:fullstatusline` (namely relative path, git statistics, some
    " file flags).
    let g:fullstatusline=81

    " Resets statusline
    set statusline=
    " Overrides hl-User3 if buffer is modified
    set statusline+=%{dyamon#statusline#setcolor()}
    " Mode flag.
    set statusline+=%3*\ %{dyamon#statusline#modeflag()}\ 
    " Start truncate from here
    set statusline+=%<
    " Relative filename.
    set statusline+=%*\ %{dyamon#statusline#fileprefix()}%1*%t
    " Left/right separator
    set statusline+=%=
    " Git info (if Fugitive and GitGutter are available)
    set statusline+=\ %*%{dyamon#statusline#gitinfo()}
    set statusline+=[
    " Various flags and metadata. In order:
    " * modified/modifiable flag
    set statusline+=%M
    " * readonly flag
    set statusline+=%R
    " * session flag
    set statusline+=%{dyamon#statusline#session()}
    " * filetype
    set statusline+=%{dyamon#statusline#filetype()}
    " * file encoding
    set statusline+=%{dyamon#statusline#fileenc()}
    set statusline+=]\ 
    " <current line>/<total lines>
    set statusline+=%3*\ %3l/%L
    " <current column>/<total columns>
    set statusline+=:%2c/%2{len(getline('.'))}
    " <page percent>
    set statusline+=\ [%P] " language server indicator
    set statusline+=%{dyamon#statusline#lsp()}

endif


" {{{1 SEARCH/COMPLETION

" Set highlighting for search results. Also search results are
" dynamically highlighted.
if has('extra_search')
    set hlsearch incsearch
endif

" Case-insensitive when searching; case-sensitive only if search string
" includes a capital letter.
set ignorecase
set smartcase

" Don't echo search wrap messages.
set shortmess+=s

" Basically enables a fuzzy-finder in command mode. Completion via <Tab>
" in command mode search in the whole subtree of the pwd.
set path+=**

if has("wildmenu")
    " Turn on wildmenu (a nice multi-option menu).
    set wildmenu

    " Hitting <Tab> will first complete the longest common prefix; hit
    " <Tab> again for a complete list of possible completions (cicle through
    " them with <Tab>).
    set wildmode=longest:full,full

    " File patterns ignored during <Tab> completion.
    set wildignore+=*.o,*~
    " Java/Scala compilation files
    set wildignore+=*.class
endif

" Options for Insert mode completion:
" + menuone: display popup menu when there is only one match;
" + longest only insert the longest common text of the matches;
" + preview: show extra information about the currently selected
"            completion in the preview window.
set completeopt=longest,menuone,preview


" {{{1 SPELL CHECKING

if has("syntax")
    " Use double method to compute suggestions (takes into account both
    " syntax errors and words with a similar sound - useful if English
    " is not your first language).
    set spellsuggest=double,15

    set spelllang=en_gb
endif


" {{{1 WINDOWS

if has('windows')
    " When using `:[v]split' (or any command including it) the buffer is
    " opened below/right.
    set splitbelow splitright
endif


" {{{1 EDITING

" Turn off soft wrap
set nowrap

" Set hard wrap to 72 columns. Control what is affected by this option
" with `formatoptions`.
set textwidth=72

" DEFAULT: formatoptions=tcq
" t     Auto-wrap text using textwidth
" c     Auto-wrap comments using textwidth, insert the current comment
"       leader automatically.
" q    	Allow formatting of comments with "gq".
" j     Where it makes sense, remove a comment leader when joining
" 	    lines.
" l 	Long lines are not broken in insert mode: When a line was longer
"       than 'textwidth' when the insert command started, Vim does not
"       automatically format it.
set formatoptions+=jl
" Here is assumed most of the time I'm editing code so I want auto-wrap
" turned on for comments but not for code. If editing prose, use a
" ftplugin with `setlocal formatoptions+=t`
set formatoptions-=t

" Do not insert two spaces after a `.`, `?` and `!` with a join command
set nojoinspaces

" Turn tabs into spaces but still keep some advantages of tabs
set expandtab smarttab

" Set number of spaces a tab counts for, and the number of spaces used
" per (auto)indent step
set tabstop=4
set shiftwidth=0      " fallback to `tabstop`

" Maintain indentation from previous line. Also activate some smart
" C-like auto-indenting features. For more advanced indentation use
" `indentexpr`.
set autoindent
if has("smartindent")
    set smartindent
endif

" Show matching bracket (briefly jumping for 0.n seconds)
set showmatch matchtime=2
" Add new matching bracket <,>.
" Required by mortimer.vim plugin
set matchpairs+=<:>

" Allow backspacing over <eol> in insert mode (eol), start of insert
" (start), autoindentation (indent).
set bs=start,eol,indent

" Removes <BS> and <Space> from the default `whichwrap` list, preventing
" them from moving to the next/previous line when on the first/last
" character of a line.
" Motivation:
" * <Space>: is the leader key;
" * <BS>: why would you use backspace?
set whichwrap=

" Fold related options.
if has('folding')

    " Default folding method is explicit with markers {{{,}}}.
    set foldmethod=marker

    " Override default `foldtext` with something like:
    " »··[42ℓ]··TITLE···················································
    set fillchars+=fold:·
    set foldtext=CustomFoldText()

    function! PadNumber(n, pad_to) abort
        let l:padding = ''
        let l:pad_to = a:pad_to
        while (l:pad_to > 0)
            if (a:n < pow(10,l:pad_to))
            	let l:padding .= ' '
	    endif
            let l:pad_to -= 1
        endwhile
        return l:padding . a:n
    endfunction

    function! CustomFoldText() abort
        let l:middot='··'
        let l:start='»'
        let l:italicsl='ℓ'
        let l:lines='[' . PadNumber(v:foldend - v:foldstart + 1, 2) . l:italicsl . ']'
        let l:prefix=substitute(&commentstring,'%s','  ','')
        let l:first=substitute(substitute(substitute(getline(v:foldstart), '\v *', '', ''),'{{{\d','','g'),l:prefix,'','')
        let l:dashes=substitute(v:folddashes, '-', l:middot, 'g')
        return l:start . l:middot . l:lines . l:dashes . l:middot . l:first
    endfunction

endif

if has('virtualedit')
    " Allow visual-block selection to exceed text boundaries
    set virtualedit=block
endif


" {{{1 POLLUTION

" Backup files (defaults: 'backup' off, 'writebackup' on if available)
if $USER ==# 'root'
    " This is done to avoid backups for files that might contain
    " sensible information.
    set nobackup nowritebackup
elseif has('writebackup')
    " Backup file is created *while* writing a file, and deleted
    " afterwards. This gives you a backup when something goes wrong
    " during a write operation.
    set nobackup writebackup
else
    " Keep a backup for each file.
    set backup
endif
" Have a look at the help for an explanation on the definition of
" `backupdir` and `directory`
set backupdir=~/.local/share/vim/backup//,.

" Swap files ('swapfile' on)
if $USER ==# 'root'
    " This is done to avoid swap files that might contain sensible
    " information.
    set noswapfile
else
    " Create swapfiles for any buffer (default).
    set swapfile
endif
set directory=~/.local/share/vim/swap//,.

" Undo files ('undofile' off)
if has('persistent_undo') && $USER !=# 'root'
    " Persist undo tree in a file and restore it when reading a file.
    " Avoiding this for `root` user to prevent sensible information to
    " appear in undo files.
    set undodir=~/.local/share/vim/undo//,.
    set undofile
endif

if has('viminfo')
    if $USER ==# 'root'
        " `viminfo` is reset for `root` user to avoid storing sensible
        " information.
        set viminfo=
    else
        " Save marks for at most 100 files (include {jump,change}list).
        set viminfo='100
        " Don't save search history
        set viminfo+=/0
        " Save 100 lines of command history
        set viminfo+=:100
        " Save at most 500 lines per register.
        set viminfo+=<200
        " Don't save anything about the input-line history
        set viminfo+=@0
        " Save file marks (A-Z and 0-9).
        set viminfo+=f1
        " Do not highlight last search pattern when loading the viminfo
        " file.
        set viminfo+=h

        if isdirectory($HOME . '/.local/share/vim')
            set viminfofile=~/.local/share/vim/viminfo
        else
            set viminfofile=~/.viminfo
        endif
    endif
endif

" Session files
" Stored in $VIM_SESSIONS=~/.local/share/vim/sessions
" NOTE: these options are provided here just in case TPope's
" `vim-obsession` plugin is not available (`-=` is idempotent anyway)
if has('mksession')
    " Don't save global options and mappings in session files (`vimrc`
    " file is sourced anyway right?)
    set sessionoptions-=options
    " Don't save empty windows
    set sessionoptions-=blank
endif


" {{{1 AUTOCMDS

augroup focus
    autocmd!
    " Focused window has guides and a statusbar
    autocmd BufEnter,FocusGained,VimEnter,WinEnter,BufWinEnter * call dyamon#guides#on()
    autocmd BufEnter,FocusGained,VimEnter,WinEnter,BufWinEnter * call dyamon#statusline#focus()
    " Unfocused windows do not have guides and the statusbar is blurred
    autocmd WinLeave,FocusLost * call dyamon#guides#off()
    autocmd WinLeave,FocusLost * call dyamon#statusline#blur()
    " Exceptions
    " TODO here 0/1 as true/false are all messed up!
    autocmd Filetype help      let b:guides=1
    autocmd Filetype netrw     let b:guides=1
    autocmd Filetype qf        let b:guides=1
    autocmd Filetype gitcommit let b:guides=1
    autocmd Filetype tagbar    let b:guides=1
    autocmd Filetype tagbar    let b:disable_statusline=1
augroup END

augroup filetypes
    autocmd!
    autocmd BufRead,BufNewFile *.tex set filetype=tex
    autocmd BufRead,BufNewFile *.ms  set filetype=groff
    autocmd BufRead,BufNewFile *.man set filetype=groff
augroup END

augroup mutt
    autocmd!
    autocmd BufRead,BufNewFile $TMPDIR/mutt* :Goyo 75%
augroup END



" {{{1 PLUGINS

" List of installed plugins, along with their custom configuration.
"
" Plugins are managed via Git Submodules; have a look at this for more
" details:
"
"   https://gist.github.com/manasthakur/d4dc9a610884c60d944a4dd97f0b3560
"
" Add a new submodule/plugin:
"
"   git submodule add --name <name> <repo> <path>
"
" Update all submodules/plugins:
"
"   git submodule foreach git pull origin master
" 
" NOTE: remember to generate help tags for the newly installed plugins.
" The easiest way is using:
"
"   :helptags ALL
"
" also bound to `<leader>hg` (Help tags Generate)

" {{{2 FZF
" https://github.com/junegunn/fzf.vim


" {{{2 GOYO
" https://github.com/junegunn/goyo.vim ~/.vim/bundle/goyo.vim

" Fixed height to 80% fo the window.
let g:goyo_height="80%"

" Custom autocmds to hide the statusline, interact with Tmux, and change
" some colors.
augroup GoyoOptions
    autocmd!
    autocmd User GoyoEnter nested call dyamon#goyo#enter()
    autocmd User GoyoLeave nested call dyamon#goyo#leave()
augroup END


" {{{2 MATCHIT
" Matching extends the capabilities of `%`. It's an optional plugin
" shipped with Vim.


" {{{2 NETRW

" Hides dotfiles by default when opening the file explorer.
" NB: toggle dotfiles visibility with `gh'.
" NB: when editing a dotfile this option is disabled by default.
let g:netrw_list_hide = '\(^\|\s\s\)\zs\.\S\+'

" Display filesystem tree-style
let g:netrw_liststyle=3

" Turn off netrw banner.
let g:netrw_banner=0

" Directory to store bookmark and history file.
let g:netrw_home="~/.local/share/vim"

" Show preview window in a vertical split.
"let g:netrw_preview=1

" Customize behaviour of preview window.
" NB: help page is wrong when it comes to define all combinations; the
" correct config is
" g:netrw_preview g:netrw_alto result
"          1             0     :botright
"          1             1     :topleft
"let g:netrw_alto=0
"let g:netrw_altv=1


" {{{2 TAGBAR
" https://github.com/majutsushi/tagbar

" Open tagbar on the left
let g:tagbar_left = 1

" Default width of the tagbar window
let g:tagbar_width = 40

" When zooming (`x`) use the width of the longest currently visible tag.
let g:tagbar_zoomwidth = 0

" Move to the Tagbar window when opened and close it when jumping to a
" tag (implies `g:tagbar_autofocus` set)
let g:tagbar_autoclose = 1

" Sort by position in the source file.
let g:tagbar_sort = 0

" Use a case-insensitive comparison when sorting tags
let g:tagbar_case_insensitive = 1

" Folds with a level higher than this number will be closed.
let g:tagbar_foldlevel = 2

" Custom icons for tagbar folds
let g:tagbar_iconchars = ['▸', ' ']

" Location of the preview window (below the current window)
let g:tagbar_previewwin_pos = "belowright"

" Custom statusbar
let g:tagbar_status_func = 'dyamon#statusline#tagbar'

" {{{3 Additional language support

" {{{4 HASKELL
" Requires: Hasktags

let g:tagbar_type_haskell = {
    \ 'ctagsbin'  : 'hasktags',
    \ 'ctagsargs' : '-x -c -o-',
    \ 'kinds'     : [
        \  'm:modules:0:1',
        \  'd:data: 0:1',
        \  'd_gadt: data gadt:0:1',
        \  't:type names:0:1',
        \  'nt:new types:0:1',
        \  'c:classes:0:1',
        \  'cons:constructors:1:1',
        \  'c_gadt:constructor gadt:1:1',
        \  'c_a:constructor accessors:1:1',
        \  'ft:function types:1:1',
        \  'fi:function implementations:0:1',
        \  'o:others:0:1'
    \ ],
    \ 'sro'        : '.',
    \ 'kind2scope' : {
        \ 'm' : 'module',
        \ 'c' : 'class',
        \ 'd' : 'data',
        \ 't' : 'type'
    \ },
    \ 'scope2kind' : {
        \ 'module' : 'm',
        \ 'class'  : 'c',
        \ 'data'   : 'd',
        \ 'type'   : 't'
    \ }
\ }


" {{{4 SCALA
" https://github.com/majutsushi/tagbar/wiki#scala


" {{{4 MARKDOWN
" https://github.com/majutsushi/tagbar/wiki#markdown


" {{{4 BIB
" https://github.com/majutsushi/tagbar/wiki#bib



" {{{2 UNODTREE
" https://github.com/mbbill/undotree

" Set the undotree window layout.
"
"  +------------------+----------+
"  |                  |          |
"  |                  |          |
"  |                  | undotree |
"  |                  |          |
"  |                  |          |
"  +------------------+----------+
"  |                             |
"  |                      diff   |
"  |                             |
"  +-----------------------------+
"
let g:undotree_WindowLayout=4

" Set the undotree window width.
let g:undotree_SplitWidth = 25

" Set the diff window height.
let g:undotree_DiffpanelHeight = 30

" Undotree window will get focus after being opened.
let g:undotree_SetFocusWhenToggle = 1

" Set the tree node shape.
let g:undotree_TreeNodeShape = '×'

" Use short (relative) timestamps.
let g:undotree_ShortIndicators = 1


" {{{2 VIM-BBYE
" https://github.com/moll/vim-bbye


" {{{2 VIM-COMMENTARY
" https://github.com/tpope/vim-commentary


" {{{2 VIM-FUGITIVE
" https://github.com/tpope/vim-fugitive


" {{{2 VIM-GITGUTTER
" https://github.com/airblade/vim-gitgutter

" Plugin on at startup (toggle with `<leader>gg`).
let g:gitgutter_enabled = 0

" No ANSI escape or color codes on `grep` invocation.
let g:gitgutter_grep = 'grep --color=never'

" Custom signs.
let g:gitgutter_sign_added    = '▐'
let g:gitgutter_sign_modified = '▐'
let g:gitgutter_sign_removed  = '▐'
let g:gitgutter_sign_modified_removed = '▐'
let g:gitgutter_sign_removed_first_line = '▐'

" Disable default mappings.
let g:gitgutter_map_keys = 0


" {{{2 VIM-OBSESSION
" https://github.com/tpope/vim-obsession


" {{{2 VIM-RACKET
" https://github.com/wlangstroth/vim-racket


" {{{2 VIM-REPEAT
" https://github.com/tpope/vim-repeat


" {{{2 VIM-SLIME
" https://github.com/jpalardy/vim-slime

" Set TMux as default target
let g:slime_target = "tmux"

" Set default TMux pane target
let g:slime_default_config = {"socket_name": "default", "target_pane": "{bottom-right}"}

" Set bridge file between VIM and TMux
let g:slime_paste_file = tempname()

" Disable default mappings
let g:slime_no_mappings = 1


" {{{2 VIM-SURROUND
" https://github.com/tpope/vim-surround


" {{{2 VIM-TMUX-FOCUS-EVENT
" https://github.com/tmux-plugins/vim-tmux-focus-events


" {{{2 VIM-TMUX-NAVIGATOR
" https://github.com/christoomey/vim-tmux-navigator

" Disable tmux navigator when zooming the Vim pane
let g:tmux_navigator_disable_when_zoomed = 1


" {{{2 VIM-VINEGAR
" https://github.com/tpope/vim-vinegar


" {{{2 VIM-TABLE-MODE
" https://github.com/dhruvasagar/vim-table-mode

" Define the table corner character
let g:table_mode_corner = '+'

" Define the character to be used for the extreme corners of the table border. >
let g:table_mode_corner_corner = '+'

" Define the table header border fill character
let g:table_mode_fillchar = '-'

" Define the table mode mapping prefix that will be prefixed for all other
" table mode mappings
let g:table_mode_map_prefix = '<LocalLeader>t'

" Define the mapping for toggling the table mode: >
let g:table_mode_toggle_map = 'm'

" Disable mappings
"let g:table_mode_disable_mappings = 1

" Disable mappings for tableize
"let g:table_mode_disable_tableize_mappings = 1

" Disable table mode syntax definitions
"let g:table_mode_syntax = 0

" Set the mapping to move up a cell vertically
let g:table_mode_motion_up_map = '{t'

" Set the mapping to move down a cell vertically
let g:table_mode_motion_down_map = '}t'

" Set the mapping to move to the left cell. >
let g:table_mode_motion_left_map = '[t'

" Set the mapping to move to the right cell. >
let g:table_mode_motion_right_map = ']t'

" {{{2 VIM-LSP
" https://github.com/prabirshrestha/vim-lsp

" Display diagnostics as a floating window
let g:lsp_diagnostics_float_cursor = 1

" Disable floating preview of documentation in completion menu (it
" ignores the `preview` option in `completeopt`.
let g:lsp_documentation_float = 0

" Align text on top when peeking on window
let g:lsp_peek_alignment = "top"

" Give priority to other gutters (e.g., GitGutter)
let g:lsp_signs_priority = 9

" Set custom diagnostic signs
"let g:lsp_signs_error       = {'text': '•'}
"let g:lsp_signs_warning     = {'text': '•'}
"let g:lsp_signs_information = {'text': '•'}
"let g:lsp_signs_hit         = {'text': '•'}
let g:lsp_signs_error       = {'text': '>>'}
let g:lsp_signs_warning     = {'text': '>>'}
let g:lsp_signs_information = {'text': '>>'}
let g:lsp_signs_hit         = {'text': '>>'}

" Closes the preview/floating window on second tap
let g:lsp_preview_doubletap = [function('lsp#ui#vim#output#closepreview')]

" Log file (uncomment when debugging)
"let g:lsp_log_file = expand('$TMPDIR/vim-lsp.log')

" Rust Language Server registration
if executable('rls')
    autocmd User lsp_setup call lsp#register_server({
        \ 'name': 'rls',
        \ 'cmd': {server_info->['rls']},
        \ 'workspace_config': {'rust': {'clippy_preference': 'on'}},
        \ 'allowlist': ['rust'],
        \ })
endif

" Scala Meta Language Server registration
" Take a look here
"
"   https://scalameta.org/metals/docs/editors/vim.html#using-an-alternative-lsp-client
"
" for details on how to install MetaLS
"
" Import build with the following command:
"
"   :call lsp#send_request('metals', { 'method': 'workspace/executeCommand', 'params': { 'command': 'build-import' }})
"
" Formatting on save needs some additional configuration. MetaLS uses
" `scalafmt` to format code. Have a look here
"
"   https://scalameta.org/metals/docs/editors/new-editor.html#textdocumentformatting
"
" for details of what MetaLS does when receiving a
" `textDocument/formatting` message.
"
" To configure it manually you need to create a `.scalafmt.conf` file
" (in the project root by default, but customizable with the
" `metals.scalafmtConfigPath` option) and with the following content:
"
" ```
" version="<version>"
" ```
" with <version> being the ScalaFMT to use for the project (latest
" version can be found at https://github.com/scalameta/scalafmt).
"
if executable('metals-vim')
   au User lsp_setup call lsp#register_server({
      \ 'name': 'metals',
      \ 'cmd': {server_info->['metals-vim']},
      \ 'initialization_options': { 'rootPatterns': 'build.sbt' },
      \ 'allowlist': [ 'scala', 'sbt' ],
      \ })
endif

function! s:on_lsp_buffer_enabled() abort
    " Enable autocompletion (Omnifunc vs asyncomplete.vim
    "setlocal omnifunc=lsp#complete
    "let b:asyncomplete_enable = 1
    " Enable docs on preview window. For more details look at
    "   https://github.com/prabirshrestha/asyncomplete.vim#preview-window
    setlocal completeopt=menuone,noinsert,noselect,preview
    " Show gutters only when needed
    setlocal signcolumn=number
    " Integrate tag functionality with vim-lsp
    if exists('+tagfunc') | setlocal tagfunc=lsp#tagfunc | endif
    " Mappings
    nmap <buffer> <leader>nc <plug>(lsp-next-diagnostic)
    nmap <buffer> <leader>pc <plug>(lsp-previous-diagnostic)
    nmap <buffer> gd <plug>(lsp-definition)
    nmap <buffer> gD <plug>(lsp-peek-definition)
    nmap <buffer> gr <plug>(lsp-references)
    nmap <buffer> K <plug>(lsp-hover)
    "nmap <buffer> gi <plug>(lsp-implementation)
    "nmap <buffer> gt <plug>(lsp-type-definition)
    "nmap <buffer> <leader>rn <plug>(lsp-rename)
    "nmap <buffer> [g <Plug>(lsp-previous-diagnostic)
    "nmap <buffer> ]g <Plug>(lsp-next-diagnostic)
    " Format buffer on save
    "augroup lsp_enabled_common
    "    autocmd!
        autocmd BufWritePre <buffer> silent LspDocumentFormatSync
    "augroup END
    "command LspMetalsBuildImport call lsp#send_request('metals', { 'method': 'workspace/executeCommand', 'params': { 'command': 'build-import' }})
endfunction

augroup lsp_install
    autocmd!
    " Call `s:on_lsp_buffer_enabled()` only for languages that has the
    " server registered.
    autocmd User lsp_buffer_enabled call s:on_lsp_buffer_enabled()
augroup END

" {{{2 ASYNCOMPLETE.VIM
" https://github.com/prabirshrestha/asyncomplete.vim

" Disable asynccomplete by default (re-enabled when using LSP)
"let g:asyncomplete_enable_for_all = 0

" Do not override `completeopt`
let g:asyncomplete_auto_completeopt = 0

" Add some delay on completion popup
let g:asyncomplete_popup_delay = 500

" Log file (uncomment when debugging)
"let g:asyncomplete_log_file = expand('$TMPDIR/vim-asyncomplete.log')

" {{{2 ASYNCOMPLETE-LSP.VIM
" https://github.com/prabirshrestha/asyncomplete-lsp.vim


" {{{2 VIM-GRAMMAROUS
" https://github.com/rhysd/vim-grammarous

" Manually downloaded Language Tools from
"   https://languagetool.org/download/LanguageTool-stable.zip
let g:grammarous#jar_dir = expand('$HOME/programs/LanguageTool-5.3')
" Seems to slow things down a lot and give more false positive in TeX
let g:grammarous#use_vim_spelllang = 0
" Don't perform spell check (toggled by hooks instead)
let g:grammarous#enable_spell_check = 0
" Change colorscheme and toggle Vim spellcheck functionality.
let g:grammarous#hooks = #{on_check: 'dyamon#spell#on', on_reset: 'dyamon#spell#off'} 

" {{{2 TO TRY

" Vim: statically built version of Vim.
" https://github.com/fr0xk/vim

" FastFold: some fixes for fold updates.
" https://github.com/Konfekt/FastFold

" Vimtex: full-featured Latex support for Vim (also integrates with
"         Zathura). Not compatible with Polyglot (which includes
"         LaTeX-Box).
" https://github.com/lervag/vimtex
"
" Consider not using a plugin at all:
" + Compilation via `:make` with
"       set makeprg=latexmk\ -pdf\ ...
" + Zathura automatically updates its view;
" + Clean up all regeneratable files on Vim closing:
"       autocmd VimLeave *.tex !latexmk -c
" + `g/\v\\(chapter|(sub)?section)/#<CR>:` map this to see the document
"   structure and quickly jump to through the document;
" + you can borrow some mappings/folding/completion/error parsing
"   configurations from Vimtex.

" MuComplete: omnicomplete wrapper (might be a good alternative to
"             full-featured autocompletion engines)
" https://github.com/lifepillar/vim-mucomplete

" Wordy: writing checker (not grammar checker).
" https://github.com/reedes/vim-wordy

" Polyglot: mega-pack of syntax/indent/autoload/compiler/ftplugin for
" various languages.
" https://github.com/sheerun/vim-polyglot

" Pencil: might provide a better soft wrap feature than vanilla?
" https://github.com/reedes/vim-pencil

" Remark: write presentations in markdown and use JavaScript to display
" them on your browser (supports presentation mode). Can be used
" offline.
" https://www.reddit.com/r/vim/comments/9bw6cp/turn_markdown_into_selfcontained_html_slideshows/
" https://github.com/gnab/remark
" https://github.com/idbrii/vim-remarkjs
" https://en.wikipedia.org/wiki/Takahashi_method

" Qfx: quickfix gutter
" https://gitlab.com/hauleth/qfx.vim

" Boxdraw: draw boxes in visual mode (quite advanced).
" https://github.com/gyim/vim-boxdraw

" Cool: enable `hlsearch` when searching, disable it when you are not.
" https://github.com/romainl/vim-cool/blob/master/plugin/cool.vim

" Dadbod: use Vim as a DBMS IDE
" https://github.com/tpope/vim-dadbod
" https://medium.com/@sammerry/vim-mysql-442b26dd013c

" MatchUp: drop-in replacement end extention for matchit.vim
" https://github.com/andymass/vim-matchup/

" HighlightedYank: briefly highlight the highlighted text on
" TextYankPost. Note that NeoVim has not a Lua function that does the
" same [here](https://github.com/neovim/neovim/pull/12279), so maybe it
" is worth waiting for Vim to implement it too.
" https://github.com/machakann/vim-highlightedyank

" VimQF: is a growing collection of settings, commands and mappings put
" together to make working with the location list/window and the
" quickfix list/window smoother.
" https://github.com/romainl/vim-qf

" {{{3 ALIGNING

" Tabular: Easily align text.
" https://github.com/godlygeek/tabular

" EasyAlign: Easily align text (action bound to `ga`)
" https://github.com/junegunn/vim-easy-align


" {{{3 TEXTOBJS

" IndentObject: a text-object based on the indentation level.
" https://github.com/michaeljsmith/vim-indent-object

" TextobjFunction: a text-object for {C,Java,VimScript} functions. Can
" be extended to include other languages.
" https://github.com/kana/vim-textobj-function

" Targets: collection of (immersive) text-objects
" https://github.com/wellle/targets.vim

" TextobjUser: declarative way of defining text-objects
" https://github.com/kana/vim-textobj-user


" {{{1 DEBUG

" Automatically create .gitignore based on given keywords
" https://www.toptal.com/developers/gitignore/api/linux,vim,rust
command! -nargs=1 GetGitignore execute "!curl https://www.toptal.com/developers/gitignore/api/linux,macos,vim,visualstudiocode," . <args> . " > .gitignore"

let g:rust_fold = 1
let g:rustfmt_command = 'rustfmt'

" https://vimways.org/2019/personal-notetaking-in-vim/
" A neat trick is <bang>0 in function arguments: this turns either to 0
" without a bang or 1 with
command! -bang -nargs=+ Zettel call Zettel(<bang>0, <f-args>)

func! Zettel(bang, ...)
  " change directory
  exec "cd " . expand('$NOTES')
  " build the file name
  let l:timestamp = strftime("%Y%m%d%H%M")
  let l:fname = l:timestamp . '.md'

  if a:bang
      exec "normal a[" . l:timestamp . "](" . l:fname . ")"
  endif

  " edit the new file
  exec "e " . l:fname

  " Fill in the title
  exec "normal :1,5s/^title:.*$/title: " . l:timestamp . " - " . join(a:000) . "/\<cr>"
endfunc

" {{{1 PLUGIN/RUNTIMEPATH MANAGER

" Source `.local.vim` file in the current working directory. Create this
" file if you want to have some project-specific vim configuration.
silent! source .local.vim

" Plugins code will be evaluated.
" If you want something to be evaluated after this point use the `after`
" folder. See `:scriptnames` for a list of all scripts, in evaluation
" order. Launch Vim with `vim --startuptime vim.log` for profiling info.
if &loadplugins
    if has('packages')
        " If Vim8 plugin/runtimepath manager is active.
        packadd vim-openscad
        packadd! gruvbox
        packadd! fzf.vim
        packadd! goyo.vim
        packadd! matchit
        packadd! mortimer.vim
        packadd! tagbar
        packadd! undotree
        packadd! vim-bbye
        packadd! vim-commentary
        packadd! vim-fugitive
        packadd! vim-gitgutter
        packadd! vim-obsession
        packadd! vim-racket
        packadd! vim-repeat
        packadd! vim-slime
        packadd! vim-surround
        packadd! vim-tmux-focus-events
        packadd! vim-tmux-navigator
        packadd! vim-vinegar
        packadd! vim-lsp
        packadd! vimprobably
        packadd! asyncomplete.vim
        packadd! asyncomplete-lsp.vim
    else
        " Fall back to TPope's Pathogen plugin manager.
        source $HOME/.vim/pack/bundle/opt/vim-pathogen/autoload/pathogen.vim
        call pathogen#infect('pack/bundle/opt/{}')
    endif
endif

" Must come *after* the `:packadd!` calls above otherwise the contents of
" package "ftdetect" directories won't be evaluated.

" Activate filetype support, and allow filetype specific plugin and
" indent files.
filetype plugin indent on
" Enable syntax highlight by default.
syntax enable

" {{{1 END

" Ignore anything after this point
finish