Disable the fold column by default, and toggle the column with fold functionality

vim/config/keyboard.vim

@@ -363,7 +363,18 @@
         nnoremap <silent><expr> ` ':if (&number)<Bar>set nonumber<Bar>if exists("b:sy")<Bar>SignifyDisable<Bar>endif<Bar>else<Bar>set number<Bar>if exists("b:sy")<Bar>SignifyEnable<Bar>endif<Bar>endif<CR>:echo "gutter visibility toggled"<CR>'
 
         "toggle the fold sidebar
-        nnoremap ~ zRzi
+        function! FoldToggle()
+            if (&foldcolumn == 0)
+                set foldenable
+                set foldcolumn=1
+                normal zR
+            else
+                set nofoldenable
+                set foldcolumn=0
+            endif
+        endfunction
+
+        nnoremap <silent><expr> ~ ':call FoldToggle()<CR>'
 
         "toggle line wrapping (and bottom bar if using the gui)
         nnoremap <silent><expr> <F1> ':set wrap!<CR>:echo "line wrapping toggled"<CR>'

vim/config/settings.vim

@@ -61,7 +61,7 @@
         syntax on "enable syntax highlighting
         set formatoptions=roqnl12 "how automatic formatting is to be done
         set diffopt=foldcolumn:0,filler "vimdiff default settings
-        set foldmethod=indent foldcolumn=1 foldlevel=2 "fold layers 3 and deeper
+        set foldmethod=indent foldcolumn=0 "use intentation as the fold method and disable the fold column
         set nofoldenable "disable folds by default
         set tw=80 "set the default text width to 80 when nothing overrides this
         set maxmempattern=10000 "increase the maximum amount of memory available for pattern matching