tpope/vim-spedddating

mjbrownie/swapit
markdown-preview
liuchengxu/graphviz.vim
rlue/vim-barbaric

Some comment strings
Some markdown latex math macro and spelloff settings

init.vim

@@ -106,6 +106,10 @@
         " shell commands without having to leave vim (eg. rename)
         Plug 'tpope/vim-eunuch'
 
+        " Improve incrementing/decrementing functionality
+        Plug 'tpope/vim-speeddating'
+        Plug 'mjbrownie/swapit'
+
         " open file at linenumber via <filename>:<linenumber>
         Plug 'wsdjeg/vim-fetch'
 
@@ -141,11 +145,25 @@
         Plug 'instant-markdown/vim-instant-markdown', {'for': 'markdown', 'do': 'yarn install'}
 
         " markdown-preview (alternative to vim-instant-markdown) TODO
-        Plug 'iamcco/markdown-preview.nvim', { 'do': 'cd app && yarn install' }
+        function! InstallMarkdownIt(info)
+            " info is a dictionary with 3 fields
+            " - name:   name of the plugin
+            " - status: 'installed', 'updated', or 'unchanged'
+            " - force:  set on PlugInstall! or PlugUpdate!
+            if a:info.status == 'installed' || a:info.force
+                !cd app && yarn install
+                " Enable showing file:// urls
+                !cd app && sed -i -e "s/vbscript|javascript|file|data/|vbscript|javascript|data/" $(rg --files-with-matches "\|file\|")
+            endif
+        endfunction
+        Plug 'iamcco/markdown-preview.nvim', { 'for': ['markdown'], 'do': function('InstallMarkdownIt') }
 
         " Better table handling (for markdown)
         Plug 'dhruvasagar/vim-table-mode'
 
+        " Graphviz
+        Plug 'liuchengxu/graphviz.vim'
+
         " SageMath
         Plug 'petRUShka/vim-sage'
 
@@ -163,6 +181,9 @@
 
         " }}}
 
+        " Automatically switch fcitx5 modes based on the current vim mode
+        Plug 'rlue/vim-barbaric'
+
         " vim-test - run perl-tests from inside the editor
         Plug 'janko-m/vim-test'
 
@@ -706,6 +727,13 @@ endif
     let g:haskell_indent_guard = 4 " 2
 " }}}
 
+" vim-barbaric {{
+    let g:barbaric_ime = 'fcitx'
+    let g:barbaric_scope = 'buffer'
+    let g:barbaric_timeout = -1
+    let g:barbaric_fcitx_cmd = 'fcitx5-remote'
+" }}
+
 "au BufRead,BufNewFile *.scad lua require('openscad')
 " openscad {{{
 
@@ -777,9 +805,11 @@ augroup CustomCommentDefinitions
     autocmd FileType cpp setlocal commentstring=\/\/\ %s
     autocmd FileType cuda setlocal commentstring=\/\/\ %s
     autocmd FileType openscad setlocal commentstring=\/\/\ %s
+    autocmd FileType nix setlocal commentstring=#\ %s
+    autocmd FileType dot setlocal commentstring=\/\/\ %s
+    autocmd FileType markdown setlocal commentstring=<!---\ %s\ -->
 augroup END
 
-
 " NCM2
 augroup NCM2
     autocmd!
@@ -856,6 +886,7 @@ augroup END
     " au FileType tex :call TexNewMathZone("N","align*",1)
 " }}
 
+
 " vim-instant-markdown {{
     au FileType markdown setlocal conceallevel=0
     "Uncomment to override defaults:
@@ -876,6 +907,9 @@ augroup END
 
 " markdown-preview {{
     au FileType markdown nnoremap <buffer> <Leader>ll :MarkdownPreview<CR>
+    function OpenMarkdownPreview (url)
+        execute "silent ! firefox --new-window " . a:url
+    endfunction
     " See https://github.com/iamcco/markdown-preview.nvim#markdownpreview-config
     let g:mkdp_auto_start = 0 " default 0
     let g:mkdp_auto_close = 0 " default 1
@@ -885,17 +919,22 @@ augroup END
     let g:mkdp_open_ip = '' " default ''
     let g:mkdp_browser = '' " default ''
     let g:mkdp_echo_preview_url = 1 " default 0
-    let g:mkdp_browserfunc = '' " default ''
+    let g:mkdp_browserfunc = 'OpenMarkdownPreview' " default ''
     let g:mkdp_preview_options = {
         \ 'mkit': {},
         \ 'katex': {
-        \    'macros': {
+        \     'macros': {
-        \      "\\doubleR": "\\mathbb{R}",
+        \         "\\RR": "\\mathbb{R}",
-        \      "\\doubleN": "\\mathbb{N}",
+        \         "\\NN": "\\mathbb{N}",
-        \      "\\doubleZ": "\\mathbb{Z}",
+        \         "\\ZZ": "\\mathbb{Z}",
-        \      "\\doubleF": "\\mathbb{F}",
+        \         "\\QQ": "\\mathbb{Q}",
-        \      "\\ds": "\\displaystyle",
+        \         "\\CC": "\\mathbb{C}",
-        \    },
+        \         "\\FF": "\\mathbb{F}",
+        \         "\\ds": "\\displaystyle",
+        \         "\\lc": "\\operatorname*{lc}",
+        \         "\\quo": "\\operatorname*{quo}",
+        \         "\\rem": "\\operatorname*{rem}",
+        \     },
         \ },
         \ 'uml': {},
         \ 'maid': {},
@@ -920,6 +959,17 @@ augroup END
     let g:table_mode_corner='|' " make the tables work with markdown
 " }}
 
+" graphviz.vim {{
+    let g:graphviz_viewer = 'feh'
+    let g:graphviz_output_format = 'svg'
+    " TODO create argument and pull request for giving arguments to the viewer program
+    augroup graphviz
+        au!
+        au FileType dot nnoremap <buffer> <Leader>ll :Graphviz!!<CR>
+        au BufWritePost *.dot :GraphvizCompile " TODO create toggle command and add pull request to github
+    augroup END
+" }}
+
 " Add spell checking to LaTeX documents {{
     let g:spellfile_URL = 'http://ftp.vim.org/vim/runtime/spell'
     function! SetLanguageSpecificSpellFile()
@@ -964,7 +1014,9 @@ augroup END
         " 3zg adds a word to the dictionary
 
         " Disable spelling in math environments
-        au FileType markdown syntax match quoteblock /\$[^$]\+\$/ contains=@NoSpell
+        au FileType markdown syntax match texMath /\$[^$]\+\$/ contains=@NoSpell containedin=markdownBlock,markdownBlockquote
+        au FileType markdown syntax region texMath start="\$\$" end="\$\$" contains=@NoSpell
+
     augroup END
 " }}
 
@@ -1052,6 +1104,12 @@ nnoremap <Space> :nohl<CR>
     augroup END
 " }}}
 
+" Configure swapit and speeddating {{
+    nmap <Plug>SwapItFallbackIncrement <Plug>SpeedDatingUp
+    nmap <Plug>SwapItFallbackDecrement <Plug>SpeedDatingDown
+    vmap <Plug>SwapItFallbackIncrement <Plug>SpeedDatingUp
+    vmap <Plug>SwapItFallbackDecrement <Plug>SpeedDatingDown
+" }}
 
 function! InsertSnip(snip_name)
     " Find the template