Adjust plugin code layout a lot

Including renaming big_file.vim and accompanying functions yet again, to
big_file_options.vim.

Trying to keep complex autocmd and mapping definitions on long lines
broken up semantically; definition and options on one line, patterns or
mapping key on the next, and the command to run on the last.

Also trying to make sure that <silent>, <buffer>, and <unique> are
applied in the correct places, and that all mapping commands are using
the :<C-U> idiom for the command prefix.

12 files changed, 58 insertions, 24 deletions

diff --git a/vim/config/file.vim b/vim/config/file.vim
index 07c20cd5..4bf1f86b 100644
--- a/vim/config/file.vim
+++ b/vim/config/file.vim
@@ -27,5 +27,9 @@ set nomodeline
 " I really like ZZ and ZQ, so I wrote a couple more mappings; ZW forces a
 " write of the current buffer, but doesn't quit, and ZA forces a write of all
 " buffers but doesn't quit
-nnoremap ZW :w!<CR>
-nnoremap ZA :wa!<CR>
+nnoremap <silent>
+      \ ZW
+      \ :<C-U>write!<CR>
+nnoremap <silent>
+      \ ZA
+      \ :<C-U>wall!<CR>
diff --git a/vim/config/format.vim b/vim/config/format.vim
index 572e9877..688b60c9 100644
--- a/vim/config/format.vim
+++ b/vim/config/format.vim
@@ -1,6 +1,7 @@
 " If we can, add j to the format options to get rid of comment leaders when
 " joining lines
-if v:version > 703 || v:version ==# 703 && has('patch541')
+if v:version > 703
+      \ || v:version ==# 703 && has('patch541')
   set formatoptions+=j
 endif
 
@@ -17,10 +18,13 @@ endif
 " t - Automatically wrap text at 'textwidth' (as above)
 "
 if has('eval') && has('user_commands')
-  nnoremap <silent> <leader>a
+  nnoremap <silent>
+        \ <Leader>a
         \ :<C-U>ToggleOptionFlagLocal formatoptions a<CR>
-  nnoremap <silent> <leader>c
+  nnoremap <silent>
+        \ <Leader>c
         \ :<C-U>ToggleOptionFlagLocal formatoptions c<CR>
-  nnoremap <silent> <leader>t
+  nnoremap <silent>
+        \ <Leader>t
         \ :<C-U>ToggleOptionFlagLocal formatoptions t<CR>
 endif
diff --git a/vim/config/list.vim b/vim/config/list.vim
index 209bb4ec..1cb4345b 100644
--- a/vim/config/list.vim
+++ b/vim/config/list.vim
@@ -1,7 +1,9 @@
 " Don't show whitespace characters or end-of-line characters visually by
 " default, but make \l toggle between them
 set nolist
-nnoremap <Leader>l :setlocal list! list?<CR>
+nnoremap <silent>
+      \ <Leader>l
+      \ :<C-U>setlocal list! list?<CR>
 
 " Clearly show when the start or end of the row does not correspond to the
 " start and end of the line
diff --git a/vim/config/number.vim b/vim/config/number.vim
index d7d9919c..becc20f1 100644
--- a/vim/config/number.vim
+++ b/vim/config/number.vim
@@ -1,3 +1,5 @@
 " Don't show line numbers by default, but \n toggles them
 set nonumber
-nnoremap <Leader>n :setlocal number! number?<CR>
+nnoremap <silent>
+      \ <Leader>n
+      \ :<C-U>setlocal number! number?<CR>
diff --git a/vim/config/search.vim b/vim/config/search.vim
index 0f10eea5..a3aba989 100644
--- a/vim/config/search.vim
+++ b/vim/config/search.vim
@@ -3,24 +3,34 @@ if has('extra_search')
 
   " Searching as I enter my pattern, \i toggles this
   set incsearch
-  nnoremap <Leader>i :setlocal incsearch! incsearch?<CR>
+  nnoremap <silent>
+        \ <Leader>i
+        \ :<C-U>setlocal incsearch! incsearch?<CR>
 
   " Highlight search results, \h toggles this
   set hlsearch
-  nnoremap <Leader>h :setlocal hlsearch! hlsearch?<CR>
+  nnoremap <silent>
+        \ <Leader>h
+        \ :<C-U>setlocal hlsearch! hlsearch?<CR>
 
   " Pressing ^L will clear highlighting until the next search-related
   " operation; quite good because the highlighting gets distracting after
   " you've found what you wanted
-  nnoremap <silent> <C-l> :nohlsearch<CR><C-l>
+  nnoremap <silent>
+        \ <C-L>
+        \ :<C-U>nohlsearch<CR><C-L>
 
   " Clear search highlighting as soon as I enter insert mode, and restore it
   " once I leave it
   if has('autocmd')
     augroup dotfiles_highlight
       autocmd!
-      silent! autocmd InsertEnter * setlocal nohlsearch
-      silent! autocmd InsertLeave * setlocal hlsearch
+      autocmd InsertEnter
+            \ *
+            \ setlocal nohlsearch
+      autocmd InsertLeave
+            \ *
+            \ setlocal hlsearch
     augroup END
   endif
 endif
diff --git a/vim/config/spell.vim b/vim/config/spell.vim
index 6a0167d0..7775ade9 100644
--- a/vim/config/spell.vim
+++ b/vim/config/spell.vim
@@ -3,12 +3,18 @@ if has('spell')
 
   " Don't check spelling by default, but bind \s to toggle this
   set nospell
-  nnoremap <Leader>s :setlocal spell! spell?<CR>
+  nnoremap <silent>
+        \ <Leader>s
+        \ :<C-U>setlocal spell! spell?<CR>
 
   " Use New Zealand English for spelling by default (it's almost identical
   " to British English), but bind \u to switch to US English and \z to
   " switch back
   set spelllang=en_nz
-  nnoremap <Leader>u :setlocal spelllang=en_us spelllang?<CR>
-  nnoremap <Leader>z :setlocal spelllang=en_nz spelllang?<CR>
+  nnoremap <silent>
+        \ <Leader>u
+        \ :<C-U>setlocal spelllang=en_us spelllang?<CR>
+  nnoremap <silent>
+        \ <Leader>z
+        \ :<C-U>setlocal spelllang=en_nz spelllang?<CR>
 endif
diff --git a/vim/config/substitution.vim b/vim/config/substitution.vim
index da9eb47e..f2d7b665 100644
--- a/vim/config/substitution.vim
+++ b/vim/config/substitution.vim
@@ -1,4 +1,8 @@
 " Preserve the flags for a pattern when repeating a substitution with &; I
 " don't really understand why this isn't a default, but there it is
-nnoremap & :&&<CR>
-vnoremap & :&&<CR>
+nnoremap <silent>
+      \ &
+      \ :<C-U>&&<CR>
+xnoremap <silent>
+      \ &
+      \ :<C-U>&&<CR>
diff --git a/vim/config/swapfile.vim b/vim/config/swapfile.vim
index f118eabd..778ae2f0 100644
--- a/vim/config/swapfile.vim
+++ b/vim/config/swapfile.vim
@@ -20,7 +20,7 @@ if !strlen($SUDO_USER) && has('unix')
   if has('autocmd')
     augroup dotfiles_swap_skip
       autocmd!
-      silent! autocmd BufNewFile,BufReadPre
+      autocmd BufNewFile,BufReadPre
             \ /tmp/*,$TMPDIR/*,$TMP/*,$TEMP/*,*/shm/*
             \ setlocal noswapfile
     augroup END
diff --git a/vim/config/undo.vim b/vim/config/undo.vim
index 872578f7..c9539665 100644
--- a/vim/config/undo.vim
+++ b/vim/config/undo.vim
@@ -24,7 +24,7 @@ if !strlen($SUDO_USER) && has('unix') && has('persistent_undo')
   if has('autocmd')
     augroup dotfiles_undo_skip
       autocmd!
-      silent! autocmd BufWritePre
+      autocmd BufWritePre
             \ /tmp/*,$TMPDIR/*,$TMP/*,$TEMP/*,*/shm/*
             \ setlocal noundofile
     augroup END
diff --git a/vim/config/viminfo.vim b/vim/config/viminfo.vim
index ce5d539d..9b01adc3 100644
--- a/vim/config/viminfo.vim
+++ b/vim/config/viminfo.vim
@@ -4,7 +4,7 @@
 if has('viminfo') && has('autocmd')
   augroup dotfiles_viminfo_skip
     autocmd!
-    silent! autocmd BufNewFile,BufReadPre
+    autocmd BufNewFile,BufReadPre
           \ /tmp/*,$TMPDIR/*,$TMP/*,$TEMP/*,*/shm/*
           \ setlocal viminfo=
   augroup END
diff --git a/vim/config/whitespace.vim b/vim/config/whitespace.vim
index 75ab7173..24cda107 100644
--- a/vim/config/whitespace.vim
+++ b/vim/config/whitespace.vim
@@ -1,2 +1,2 @@
 " \x strips trailing whitespace via a custom plugin
-nmap <leader>x <Plug>StripTrailingWhitespace
+nmap <Leader>x <Plug>StripTrailingWhitespace
diff --git a/vim/config/wrap.vim b/vim/config/wrap.vim
index 5da843ce..a3fccbba 100644
--- a/vim/config/wrap.vim
+++ b/vim/config/wrap.vim
@@ -1,6 +1,8 @@
 " Don't wrap by default, but use \w to toggle it on or off quickly
 set nowrap
-nnoremap <Leader>w :setlocal wrap! wrap?<CR>
+nnoremap <silent>
+      \ <Leader>w
+      \ :<C-U>setlocal wrap! wrap?<CR>
 
 " When wrapping text, if a line is so long that not all of it can be shown on
 " the screen, show as much as possible anyway; by default Vim fills the left
@@ -29,6 +31,6 @@ if has('linebreak')
   endif
 
   " \b toggles copy-pasteable linebreak settings
-  nmap <leader>b <Plug>CopyLinebreak
+  nmap <Leader>b <Plug>CopyLinebreak
 
 endif