home: vim: add 'plugin' directory

home/vim/default.nix

@@ -45,4 +45,10 @@
 
     extraConfig = builtins.readFile ./init.vim;
   };
+
+  xdg.configFile = {
+    "nvim/plugin" = {
+      source = ./plugin;
+    };
+  };
 }

home/vim/plugin/abbreviations.vim

@@ -0,0 +1,5 @@
+" A few useful sets of abbreviations
+
+" A few things that are hard to write in ASCII
+abbreviate (R) ©
+abbreviate (TM) ™

home/vim/plugin/mappings/leader.vim

@@ -0,0 +1,6 @@
+" Map leader to space (needs the noremap trick to avoid moving the cursor)
+nnoremap <Space> <Nop>
+let mapleader=" "
+
+" Map localleader to '!' (if I want to filter text, I use visual mode)
+let maplocalleader="!"

home/vim/plugin/numbertoggle.vim

@@ -0,0 +1,13 @@
+" Idea for toggling taken from jeffkreeftmeijer
+
+" Show line numbers
+set number
+
+augroup numbertoggle
+    autocmd!
+    " Toggle numbers between relative and absolute when changing buffers
+    autocmd BufEnter,FocusGained,InsertLeave,WinEnter * if &nu | set rnu   | endif
+    autocmd BufLeave,FocusLost,InsertEnter,WinLeave   * if &nu | set nornu | endif
+    " Disable line numbers and relative line numbers in terminal
+    autocmd TermOpen * setlocal nonu nornu
+augroup END

home/vim/plugin/settings/ale.vim

@@ -0,0 +1,24 @@
+" Always display the sign column to avoid moving the buffer all the time
+let g:ale_sign_column_always=1
+
+" Change the way ALE display messages
+let g:ale_echo_msg_info_str='I'
+let g:ale_echo_msg_warning_str='W'
+let g:ale_echo_msg_error_str='E'
+
+" The message displayed in the command line area
+let g:ale_echo_msg_format='[%linter%][%severity%]%(code):% %s'
+
+" The message displayed in the location list
+let g:ale_loclist_msg_format='[%linter%]%(code):% %s'
+
+" Don't lint every time I change the buffer
+let g:ale_lint_on_text_changed=0
+" Don't lint on leaving insert mode
+let g:ale_lint_on_insert_leave=0
+" Don't lint on entering a buffer
+let g:ale_lint_on_enter=0
+" Do lint on save
+let g:ale_lint_on_save=1
+" Lint on changing the filetype
+let g:ale_lint_on_filetype_changed=1

home/vim/plugin/settings/betterwhitespace.vim

@@ -0,0 +1,5 @@
+" Enable trailing whitespace high-lighting
+let g:better_whitespace_enabled=1
+
+" Strip trailing whitespace on file-save
+let g:strip_whitespace_on_save=1

home/vim/plugin/settings/fastfold.vim

@@ -0,0 +1,5 @@
+" Intercept all fold commands
+let g:fastfold_fold_command_suffixes=[
+  \     'x', 'X', 'a', 'A', 'o', 'O', 'c', 'C',
+  \     'r', 'R', 'm', 'M', 'i', 'n', 'N'
+  \ ]

home/vim/plugin/settings/fzf.vim

@@ -0,0 +1,8 @@
+" Use a floating window when availble
+if has('nvim-0.4.0') || has("patch-8.2.0191")
+    let g:fzf_layout = { 'window': {
+                \ 'width': 0.9,
+                \ 'height': 0.7,
+                \ 'highlight': 'Comment',
+                \ 'rounded': v:false } }
+endif

home/vim/plugin/settings/gruvbox.vim

@@ -0,0 +1,5 @@
+" Use the high-contrast theme
+let g:gruvbox_contrast_dark='hard'
+
+" Enable italics because urxvt supports them
+let g:gruvbox_italic=1

home/vim/plugin/settings/lightline.vim

@@ -0,0 +1,81 @@
+" Initialise light-line setting structure
+let g:lightline={}
+
+" Use the wombat colorscheme
+let g:lightline.colorscheme='onedark'
+
+" Status-line for active buffer
+let g:lightline.active={
+  \     'left': [
+  \         [ 'mode', 'paste' ],
+  \         [ 'gitbranch', 'readonly', 'filename', 'modified' ],
+  \         [ 'spell' ],
+  \     ],
+  \     'right': [
+  \         [ 'lineinfo' ],
+  \         [ 'percent' ],
+  \         [ 'fileformat', 'fileencoding', 'filetype' ],
+  \         [ 'linter_check', 'linter_errors', 'linter_warn', 'linter_ok' ],
+  \         [ 'ctags_status' ],
+  \     ]
+  \ }
+
+" Status-line for inactive buffer
+let g:lightline.inactive={
+  \     'left': [
+  \         [ 'filename' ],
+  \     ],
+  \     'right': [
+  \         [ 'lineinfo' ],
+  \         [ 'percent' ],
+  \     ],
+  \ }
+
+" Which component should be written using which function
+let g:lightline.component_function={
+  \     'readonly': 'LightlineReadonly',
+  \     'modified': 'LightlineModified',
+  \     'gitbranch': 'LightlineFugitive',
+  \ }
+
+" Which component can be expanded by using which function
+let g:lightline.component_expand={
+  \    'linter_check': 'lightline#ale#checking',
+  \    'linter_warn': 'lightline#ale#warnings',
+  \    'linter_errors': 'lightline#ale#errors',
+  \    'linter_ok': 'lightline#ale#ok',
+  \ }
+
+" How to color custom components
+let g:lightline.component_type={
+  \   'readonly': 'error',
+  \   'linter_checking': 'left',
+  \   'linter_warn': 'warning',
+  \   'linter_errors': 'error',
+  \   'linter_ok': 'left',
+  \ }
+
+" Show pretty icons instead of text for linting status
+let g:lightline#ale#indicator_checking='⏳'
+let g:lightline#ale#indicator_warnings='◆'
+let g:lightline#ale#indicator_errors='✗'
+let g:lightline#ale#indicator_ok='✓'
+
+" Show a lock icon when editing a read-only file when it makes sense
+function! LightlineReadonly()
+    return &ft!~?'help\|vimfiler\|netrw' && &readonly ? '' : ''
+endfunction
+
+" Show a '+' when the buffer is modified, '-' if not, when it makes sense
+function! LightlineModified()
+    return &ft=~'help\|vimfiler\|netrw' ? '' : &modified ? '+' : &modifiable ? '' : '-'
+endfunction
+
+" Show branch name with nice icon in status line, when it makes sense
+function! LightlineFugitive()
+    if &ft!~?'help\|vimfiler\|netrw' && exists('*fugitive#head')
+            let branch=fugitive#head()
+            return branch!=#'' ? ' '.branch : ''
+    endif
+    return ''
+endfunction

home/vim/plugin/settings/pandoc.vim

@@ -0,0 +1,20 @@
+" Which code-block languages should I expect to be high-lighted.
+let g:pandoc#syntax#codeblocks#embeds#langs=[
+  \     "bash=sh",
+  \     "c",
+  \     "cpp",
+  \     "go",
+  \     "haskell",
+  \     "python",
+  \     "rust",
+  \     "sh",
+  \     "vim",
+  \     "yaml",
+  \     "tex",
+  \     "toml",
+  \     "perl",
+  \     "json",
+  \     "latex=tex",
+  \     "make",
+  \     "makefile=make",
+  \ ]

home/vim/plugin/signtoggle.vim

@@ -0,0 +1,8 @@
+augroup signtoggle
+    autocmd!
+    " Only show the sign column for the current focused buffer
+    autocmd BufEnter,FocusGained,WinEnter * set signcolumn=yes
+    autocmd BufLeave,FocusLost,WinLeave   * set signcolumn=no
+    " Disable the sign column in terminal
+    autocmd TermOpen * setlocal signcolumn=no
+augroup END