Enable RGB color support

The Solarized color scheme for Vim doesn't use RGB colors in the
terminal, only in MacVim/gVim. However, iTerm supports RGB colors.

There's an open pull request that turns this on[1], but it hasn't been
merged in. Instead of pulling this plugin from GitHub, simply vendor it.

[1]: altercation/solarized#329

Author: mcmire

src/config/nvim/config/colors.vim

@@ -92,11 +92,15 @@ function! s:ToggleColorScheme()
   endif
 endfunction
 
-" We set dark mode as the default:
-
-call s:UseColorScheme("dark")
-
 " But you can use `,th` to flip between the two modes:
 
 command! -nargs=0 ToggleColorScheme call s:ToggleColorScheme()
 nnoremap <Leader>th :ToggleColorScheme<CR>
+
+" Enable RGB color support:
+
+set termguicolors
+
+" and set dark mode as the default:
+
+call s:UseColorScheme("dark")

src/config/nvim/plugged/vim-colors-solarized/README.mkd

@@ -0,0 +1,267 @@
+---
+Title: Solarized Colorscheme for Vim
+Description: Precision colors for machines and people
+Author: Ethan Schoonover
+Colors: light yellow
+Created:  2011 Mar 15
+Modified: 2011 Apr 16
+
+---
+
+Solarized Colorscheme for Vim
+=============================
+
+Developed by Ethan Schoonover <es@ethanschoonover.com>
+
+Visit the [Solarized homepage]
+------------------------------
+
+See the [Solarized homepage] for screenshots, 
+details and colorscheme versions for Vim, Mutt, popular terminal emulators and 
+other applications.
+
+Screenshots
+-----------
+
+![solarized dark](https://github.com/altercation/solarized/raw/master/img/solarized-vim.png)
+
+Downloads
+---------
+
+If you have come across this colorscheme via the [Vim-only repository] on 
+github, or the [vim.org script] page see the link above to the Solarized 
+homepage or visit the main [Solarized repository].
+
+The [Vim-only repository] is kept in sync with the main [Solarized repository] 
+and is for installation convenience only (with [Pathogen] or [Vundle], for 
+instance).  Issues, bug reports, changelogs are centralized at the main 
+[Solarized repository].
+
+[Solarized homepage]:   http://ethanschoonover.com/solarized
+[Solarized repository]: https://github.com/altercation/solarized
+[Vim-only repository]:  https://github.com/altercation/vim-colors-solarized
+[vimorg-script]:        http://vim.org/script
+[Pathogen]:             https://github.com/tpope/vim-pathogen
+[Vundle]:               https://github.com/gmarik/vundle
+
+Installation
+------------
+
+### Option 1: Manual installation
+
+1.  Move `solarized.vim` to your `.vim/colors` directory. After downloading the 
+    vim script or package:
+
+        $ cd vim-colors-solarized/colors
+        $ mv solarized.vim ~/.vim/colors/
+
+### Option 2: Pathogen installation ***(recommended)***
+
+1.  Download and install Tim Pope's [Pathogen].
+
+2.  Next, move or clone the `vim-colors-solarized` directory so that it is 
+    a subdirectory of the `.vim/bundle` directory.
+
+    a. **Clone:** 
+
+            $ cd ~/.vim/bundle
+            $ git clone git://github.com/altercation/vim-colors-solarized.git
+
+    b. **Move:**
+
+        In the parent directory of vim-colors-solarized:
+        
+            $ mv vim-colors-solarized ~/.vim/bundle/
+
+### Modify .vimrc
+
+After either Option 1 or Option 2 above, put the following two lines in your 
+.vimrc:
+
+    syntax enable
+    set background=dark
+    colorscheme solarized
+
+or, for the light background mode of Solarized:
+
+    syntax enable
+    set background=light
+    colorscheme solarized
+
+I like to have a different background in GUI and terminal modes, so I can use 
+the following if-then. However, I find vim's background autodetection to be 
+pretty good and, at least with MacVim, I can leave this background value 
+assignment out entirely and get the same results.
+
+    if has('gui_running')
+        set background=light
+    else
+        set background=dark
+    endif
+
+See the [Solarized homepage] for screenshots which will help you 
+select either the light or dark background.
+
+### IMPORTANT NOTE FOR TERMINAL USERS:
+
+If you are going to use Solarized in Terminal mode (i.e. not in a GUI version 
+like gvim or macvim), **please please please** consider setting your terminal 
+emulator's colorscheme to used the Solarized palette. I've included palettes 
+for some popular terminal emulator as well as Xdefaults in the official 
+Solarized download available from [Solarized homepage]. If you use 
+Solarized *without* these colors, Solarized will need to be told to degrade its
+colorscheme to a set compatible with the limited 256 terminal palette (whereas 
+by using the terminal's 16 ansi color values, you can set the correct, specific 
+values for the Solarized palette).
+
+If you do use the custom terminal colors, solarized.vim should work out of the
+box for you. If you are using a terminal emulator that supports 256 colors and 
+don't want to use the custom Solarized terminal colors, you will need to use 
+the degraded 256 colorscheme. To do so, simply add the following line *before* 
+the `colorschem solarized` line:
+
+    let g:solarized_termcolors=256
+
+Again, I recommend just changing your terminal colors to Solarized values 
+either manually or via one of the many terminal schemes available for import.
+
+Advanced Configuration
+----------------------
+
+Solarized will work out of the box with just the two lines specified above but 
+does include several other options that can be set in your .vimrc file.
+
+Set these in your vimrc file prior to calling the colorscheme.
+"
+    option name               default     optional
+    ------------------------------------------------
+    g:solarized_termcolors=   16      |   256
+    g:solarized_termtrans =   0       |   1
+    g:solarized_degrade   =   0       |   1
+    g:solarized_bold      =   1       |   0
+    g:solarized_underline =   1       |   0
+    g:solarized_italic    =   1       |   0
+    g:solarized_contrast  =   "normal"|   "high" or "low"
+    g:solarized_visibility=   "normal"|   "high" or "low"
+    ------------------------------------------------
+
+### Option Details
+
+*   g:solarized_termcolors
+
+    This is set to *16* by default, meaning that Solarized will attempt to use 
+    the standard 16 colors of your terminal emulator. You will need to set 
+    those colors to the correct Solarized values either manually or by 
+    importing one of the many colorscheme available for popular terminal 
+    emulators and Xdefaults.
+
+*   g:solarized_termtrans
+
+    If you use a terminal emulator with a transparent background and Solarized 
+    isn't displaying the background color transparently, set this to 1 and 
+    Solarized will use the default (transparent) background of the terminal 
+    emulator. *urxvt* required this in my testing; iTerm2 did not.
+
+    Note that on Mac OS X Terminal.app, solarized_termtrans is set to 1 by 
+    default as this is almost always the best option. The only exception to 
+    this is if the working terminfo file supports 256 colors (xterm-256color).
+
+*   g:solarized_degrade
+
+    For test purposes only; forces Solarized to use the 256 degraded color mode 
+    to test the approximate color values for accuracy.
+
+*   g:solarized_bold | g:solarized_underline | g:solarized_italic
+
+    If you wish to stop Solarized from displaying bold, underlined or 
+    italicized typefaces, simply assign a zero value to the appropriate 
+    variable, for example: `let g:solarized_italic=0`
+
+*   g:solarized_contrast
+
+    Stick with normal! It's been carefully tested. Setting this option to high 
+    or low does use the same Solarized palette but simply shifts some values up 
+    or down in order to expand or compress the tonal range displayed.
+
+*   g:solarized_visibility
+
+    Special characters such as trailing whitespace, tabs, newlines, when
+    displayed using `:set list` can be set to one of three levels depending on 
+    your needs. Default value is `normal` with `high` and `low` options.
+
+Toggle Background Function
+--------------------------
+
+Solarized comes with a Toggle Background plugin that by default will map to 
+<F5> if that mapping is available. If it is not available you will need to 
+either map the function manually or change your current <F5> mapping to 
+something else.
+
+To set your own mapping in your .vimrc file, simply add the following line to 
+support normal, insert and visual mode usage, changing the "<F5>" value to the 
+key or key combination you wish to use:
+
+    call togglebg#map("<F5>")
+
+Note that you'll want to use a single function key or equivalent if you want 
+the plugin to work in all modes (normal, insert, visual).
+
+Code Notes
+----------
+
+Use folding to view the `solarized.vim` script with `foldmethod=marker` turned 
+on.
+
+I have attempted to modularize the creation of Vim colorschemes in this script 
+and, while it could be refactored further, it should be a good foundation for 
+the creation of any color scheme. By simply changing the sixteen values in the 
+GUI section and testing in gvim (or mvim) you can rapidly prototype new 
+colorschemes without diving into the weeds of line-item editing each syntax 
+highlight declaration.
+
+The Values
+----------
+
+L\*a\*b values are canonical (White D65, Reference D50), other values are 
+matched in sRGB space.
+
+    SOLARIZED HEX     16/8 TERMCOL  XTERM/HEX   L*A*B      sRGB        HSB
+    --------- ------- ---- -------  ----------- ---------- ----------- -----------
+    base03    #002b36  8/4 brblack  234 #1c1c1c 15 -12 -12   0  43  54 193 100  21
+    base02    #073642  0/4 black    235 #262626 20 -12 -12   7  54  66 192  90  26
+    base01    #586e75 10/7 brgreen  240 #4e4e4e 45 -07 -07  88 110 117 194  25  46
+    base00    #657b83 11/7 bryellow 241 #585858 50 -07 -07 101 123 131 195  23  51
+    base0     #839496 12/6 brblue   244 #808080 60 -06 -03 131 148 150 186  13  59
+    base1     #93a1a1 14/4 brcyan   245 #8a8a8a 65 -05 -02 147 161 161 180   9  63
+    base2     #eee8d5  7/7 white    254 #d7d7af 92 -00  10 238 232 213  44  11  93
+    base3     #fdf6e3 15/7 brwhite  230 #ffffd7 97  00  10 253 246 227  44  10  99
+    yellow    #b58900  3/3 yellow   136 #af8700 60  10  65 181 137   0  45 100  71
+    orange    #cb4b16  9/3 brred    166 #d75f00 50  50  55 203  75  22  18  89  80
+    red       #dc322f  1/1 red      160 #d70000 50  65  45 220  50  47   1  79  86
+    magenta   #d33682  5/5 magenta  125 #af005f 50  65 -05 211  54 130 331  74  83
+    violet    #6c71c4 13/5 brmagenta 61 #5f5faf 50  15 -45 108 113 196 237  45  77
+    blue      #268bd2  4/4 blue      33 #0087ff 55 -10 -45  38 139 210 205  82  82
+    cyan      #2aa198  6/6 cyan      37 #00afaf 60 -35 -05  42 161 152 175  74  63
+    green     #859900  2/2 green     64 #5f8700 60 -20  65 133 153   0  68 100  60
+
+License
+-------
+Copyright (c) 2011 Ethan Schoonover
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

src/config/nvim/plugged/vim-colors-solarized/autoload/togglebg.vim

@@ -0,0 +1,55 @@
+" Toggle Background
+" Modified:     2011 Apr 29
+" Maintainer:   Ethan Schoonover
+" License:      OSI approved MIT license
+
+if exists("g:loaded_togglebg")
+    finish
+endif
+let g:loaded_togglebg = 1
+
+" noremap is a bit misleading here if you are unused to vim mapping.
+" in fact, there is remapping, but only of script locally defined remaps, in 
+" this case <SID>TogBG. The <script> argument modifies the noremap scope in 
+" this regard (and the noremenu below).
+nnoremap <unique> <script> <Plug>ToggleBackground <SID>TogBG
+inoremap <unique> <script> <Plug>ToggleBackground <ESC><SID>TogBG<ESC>a
+vnoremap <unique> <script> <Plug>ToggleBackground <ESC><SID>TogBG<ESC>gv
+nnoremenu <script> Window.Toggle\ Background <SID>TogBG
+inoremenu <script> Window.Toggle\ Background <ESC><SID>TogBG<ESC>a
+vnoremenu <script> Window.Toggle\ Background <ESC><SID>TogBG<ESC>gv
+tmenu Window.Toggle\ Background Toggle light and dark background modes
+nnoremenu <script> ToolBar.togglebg <SID>TogBG
+inoremenu <script> ToolBar.togglebg <ESC><SID>TogBG<ESC>a
+vnoremenu <script> ToolBar.togglebg <ESC><SID>TogBG<ESC>gv
+tmenu ToolBar.togglebg Toggle light and dark background modes
+noremap <SID>TogBG  :call <SID>TogBG()<CR>
+
+function! s:TogBG()
+    let &background = ( &background == "dark"? "light" : "dark" )
+    if exists("g:colors_name")
+        exe "colorscheme " . g:colors_name
+    endif
+endfunction
+
+if !exists(":ToggleBG")
+    command ToggleBG :call s:TogBG()
+endif
+
+function! ToggleBackground()
+    echo "Please update your ToggleBackground mapping. ':help togglebg' for information."
+endfunction
+
+function! togglebg#map(mapActivation)
+    try
+        exe "silent! nmap <unique> ".a:mapActivation." <Plug>ToggleBackground"
+        exe "silent! imap <unique> ".a:mapActivation." <Plug>ToggleBackground"
+        exe "silent! vmap <unique> ".a:mapActivation." <Plug>ToggleBackground"
+    finally
+        return 0
+    endtry
+endfunction
+
+if !exists("no_plugin_maps") && !hasmapto('<Plug>ToggleBackground')
+    call togglebg#map("<F5>")
+endif