[UPDATE][VIM] Move mappings to different files

Because a lot of my mappings use the <Leader> key, this is the only file
that *must* be loaded before all the others, otherwise the value of
leader when the script is read will be erroneous.

I also tried to use `git write-tree` and `git commit-tree` to emulate a
manual octopus merge to preserve the line history for each file. But
honestly that gave a graph that was too ugly for a history that really
did not need that amount of accountability. However it is a fun
exercise, and I recommend to everyone to try it at least once.
See Raymond Chen's blog `The Old New Thing`, with the post titled `How
to split out pieces of a file while preserving git line history: The
hard way with commit-tree`, for an explanation.

vim/.vim/after/plugin/mappings/fugitive.vim

@@ -0,0 +1,16 @@
+" Visual bindings for merging diffs as in normal mode
+xnoremap dp :diffput<cr>
+xnoremap do :diffget<cr>
+
+" Git add current file
+nnoremap <Leader>ga :Git add %:p<CR><CR>
+" Open status window
+nnoremap <Leader>gs :Gstatus<CR>
+" Open diff view of current buffer: the up/left window is the current index
+nnoremap <Leader>gd :Gdiffsplit!<CR>
+" Open current file log in new tab, populate its location list with history
+nnoremap <Leader>gl :sp<CR><C-w>T:Gllog --follow -- %:p<CR>
+" Open a buffer to the left with blame information
+nnoremap <Leader>gb :Gblame<CR>
+" Commit staged changes, open a new tab just for it
+nnoremap <Leader>gc :Gcommit -v -q<CR>

vim/.vim/after/plugin/mappings/fzf.vim

@@ -0,0 +1,20 @@
+" Only git-tracked files, Vim needs to be in a Git repository
+nnoremap <Leader>fg :GFiles<CR>
+" All files
+nnoremap <Leader>ff :Files<CR>
+" Currently open buffers
+nnoremap <Leader>fb :Buffers<CR>
+" Buffer history
+nnoremap <Leader>fh :History<CR>
+" Tags in buffer
+nnoremap <Leader>ft :BTags<CR>
+" Tags in all project files
+nnoremap <Leader>fT :Tags<CR>
+" Snippets for the current fileytpe (using Ultisnips)
+nnoremap <Leader>fs :Snippets<CR>
+" All available commands
+nnoremap <Leader>f: :Commands<CR>
+" All commits (using fugitive)
+nnoremap <Leader>fc :Commits<CR>
+" All commits for the current buffer (using fugitive)
+nnoremap <Leader>fC :BCommits<CR>

vim/.vim/after/plugin/mappings/misc.vim

@@ -0,0 +1,15 @@
+" Yank until the end of line with Y, to be more consistent with D and C
+nnoremap Y y$
+
+" Mappings for working with vimrc
+nnoremap <Leader>ev :edit $MYVIMRC<CR>
+nnoremap <Leader>es :source $MYVIMRC<CR>
+
+" Run make silently, then skip the 'Press ENTER to continue'
+noremap <Leader>m :silent! :make! \| :redraw!<CR>
+
+" Remove search-highlighting
+noremap <Leader><Leader> :nohls<CR>
+
+" Explicit map for vim-cheat40 which seems to fail because of my <Nop> map
+map <Leader>? :<C-u>Cheat40<CR>

vim/.vim/after/plugin/mappings/qf.vim

@@ -0,0 +1,11 @@
+" Next and previous in quick-fix list
+nmap <Leader>fn <Plug>(qf_qf_next)
+nmap <Leader>fp <Plug>(qf_qf_previous)
+
+" Next and previous in location list
+nmap <Leader>ln <Plug>(qf_loc_next)
+nmap <Leader>lp <Plug>(qf_loc_previous)
+
+" Toggle quick-fix and location lists
+nmap <Leader>tf <Plug>(qf_qf_toggle)
+nmap <Leader>tl <Plug>(qf_loc_toggle)

vim/.vim/after/plugin/mappings/unimpaired.vim

@@ -0,0 +1,7 @@
+" Better fr layout mappings for vim-unimpaired and other '[' and ']' commands
+nmap ( [
+nmap ) ]
+omap ( [
+omap ) ]
+xmap ( [
+xmap ) ]