diff --git a/aliases/key_aliases b/aliases/key_aliases
index 7c1a4ca..bc8bb45 100644
--- a/aliases/key_aliases
+++ b/aliases/key_aliases
@@ -9,8 +9,8 @@ fi "fish"
 # reload urxvt
 ru "xrdb ~/.Xresources"
 # list file sizes in megabytes with depth 1
-duh "sudo du -d 1 -ah | sort -hr"
-dum "sudo du -d 1 -am | sort -hr"
+duh "sudo du -d 1 -h --apparent-size | sort -hr"
+dum "sudo du -d 1 -m --apparent-size | sort -hr"
 m "man"
 tl "tldr"
 
@@ -102,38 +102,45 @@ vlh "alsamixer -c 2"
 
 #  pacman {{{ # 
 
-pc "sudo pacman -S"
-pcq "sudo pacman -Qi"
-pcr "sudo pacman -Rns"
-pcud "sudo pacman -Sy"
-pcug "sudo pacman -Syu"
-xpc "pacman -Qqne > ~/linux-config/txt/nzxt-pkgs.txt && pacman -Qqme > ~/linux-config/txt/nzxt-aur.txt "
+# pc "sudo pacman -S"
+# pcq "sudo pacman -Qi"
+# pcr "sudo pacman -Rns"
+# pcud "sudo pacman -Sy"
+# pcug "sudo pacman -Syu"
+# xpc "pacman -Qqne > ~/linux-config/txt/nzxt-pkgs.txt && pacman -Qqme > ~/linux-config/txt/nzxt-aur.txt "
+
 # tri "trizen -S --noconfirm"
 tri "trizen -S --noedit"
 
+# install
+ya "yay -S --answerdiff=N --answeredit=N"
+# info
+yaq "yay -Qi"
+# remove
+yar "yay -Rns"
+# sync
+yaud "yay -Sy"
+# sync and update
+yaug "yay -Syu"
+# export packages
+xya "yay -Qqne > ~/linux-config/txt/nzxt-pkgs.txt && yay -Qqme > ~/linux-config/txt/nzxt-aur.txt "
+
 #  }}} pacman # 
 
 py "python"
 pipi "sudo pip install"
 
 # internet
-pgo "ping -c 3 8.8.8.8"
+pg "ping -c 3 -W 1 8.8.8.8"
 dh "sudo dhcpcd"
 kdh "sudo killall dhcpcd"
 rdh "sudo killall dhcpcd && sudo dhcpcd"
 
 id "identify"
 
-#  }}} system # 
-
-# config files {{{ #
-rf "source ~/.config/fish/config.fish"
-srf "sync-shortcuts && source ~/.config/fish/config.fish"
-rz "source ~/linux-config/aliases/zsh_aliases"
+# rz "source ~/linux-config/aliases/zsh_aliases"
 
-pipes "pipes.sh -t 3"
-	
-# }}} config files #
+#  }}} system # 
 
 #  applications {{{ # 
 
@@ -148,11 +155,13 @@ gpe "gpg --encrypt --recipient"
 htc "htop -s PERCENT_CPU"
 htm "htop -s PERCENT_MEM"
 kd "killall Discord && killall Discord"
+kt "killall thunderbird"
 mp "mpv --volume=50"
 mra "man ranger"
 n "nvim"
 nd "node"
 p3 "python3"
+pipes "pipes.sh -t 3"
 py "python"
 r "ranger"
 rx "redshift -x"
@@ -198,6 +207,7 @@ wrw "watson report"
 wre "watson restart"
 ws "watson status && watson stop"
 wse "watson stop && watson edit"
+wsc "watson cancel"
 wsl "watson stop && watson log --day"
 wt "watson status"
 
@@ -272,6 +282,7 @@ gcam "git add -A . && git commit --amend -S"
 
 psgi "git add . && git commit -m 'Update' -S && git push"
 gps "git push"
+gpsi "git config credential.helper store && git push"
 # gpsn "git push --set-upstream origin master"
 gpsn "eval (git push 2>&1 | tail -n 2)"
 gpsf "git push --force"
@@ -321,10 +332,9 @@ rgt "rg TODO"
 # svscs "f $spv_dir/src/static/scss"
 # svcss "f $spv_dir/src/spotifyvis/static/scss"
 # start spv server from dir
-pg "sudo systemctl start postgresql.service && systemctl status postgresql.service"
+# pg "sudo systemctl start postgresql.service && systemctl status postgresql.service"
 ssv "bash ../bin/activate && python manage.py runserver"
 # start spv server outside dir
-sssv "sv && ssv"
 # open spv db in psql
 spvdb "psql -d spotifyvis -U django"
 mig "python manage.py makemigrations && python manage.py migrate --run-syncdb && ssv"
@@ -372,12 +382,16 @@ rt "python ~/coding/rt-scraper/rt-scraper.py"
 
 #  369 {{{ # 
 
+ssc "ssh mokkar@teach.cs.utoronto.ca"
+
 ma "printf '\033c' && bear make"
 mc "bear make clean"
+mca "bear make clean && printf '\033c' && bear make"
 
+rmc "rm compile_commands.json"
 rms "rm swapfile.*"
-wl6 "watson log --all --project=369 --tag=a3"
-wr6 "watson report --all --project=369 --tag=a3"
+wl6 "watson log --all --project=369 --tag=a4"
+wr6 "watson report --all --project=369 --tag=a4"
 
 #  a2 {{{ # 
 
@@ -401,8 +415,8 @@ hl "valgrind --tool=helgrind ./carsim light 10 20"
 
 # 309
 0ht "cd ~/school/309-proj && python3 -m http.server"
-wl0 "watson log --all --project=309 --tag=project"
-wr0 "watson report --all --project=309 --tag=project"
+wl0 "watson log --all --project=309 --tag=e3"
+wr0 "watson report --all --project=309 --tag=e3"
 
 e3t "node test-app.js"
 
diff --git a/fish/.config/fish/config.fish b/fish/.config/fish/config.fish
index 9b47c98..7edccb3 100644
--- a/fish/.config/fish/config.fish
+++ b/fish/.config/fish/config.fish
@@ -9,25 +9,34 @@ set -x GPG_TTY (tty)
 
 # }}} login to X #
 
-# input
+# fish-specific {{{ #
+
 fish_vi_key_bindings
 set -x EDITOR nvim 
 set -x VISUAL nvim 
+set -U fish_help_browser firefox 
 
 builtin cd $last_dir
 bind \ce edit_command_buffer
 bind \cr forward-word
 
-# fish-specific
+/home/kevin/linux-config/scripts/sync-shortcuts
+source /home/kevin/.config/fish/key_abbr.fish
 set -U fish_fxn_dir "/home/kevin/linux-config/fish/.config/fish/functions"
 abbr ff "cd $fish_fxn_dir"
 for fxn in (find $fish_fxn_dir -name '*.fish')
 	source $fxn
 end
-source /home/kevin/.config/fish/key_abbr.fish
+abbr rf "source ~/.config/fish/config.fish"
+abbr rfs "sync-shortcuts && source ~/.config/fish/config.fish"
 abbr xf "fish_config"
 abbr f. "cd .."
 abbr f.. "cd ../.."
+abbr mt "math ''"
+
+# }}} fish-specific #
+
+# universal var's {{{ #
 
 # spv
 set -U spv_dir "/home/kevin/coding/spotify-lib-vis"
@@ -43,7 +52,12 @@ set -xU XSET_DELAY 200
 # xmodmap ~/.Xmodmap && xset r rate $XSET_DELAY $XSET_RATE
 # xset r rate $XSET_DELAY $XSET_RATE
 
-# fxn abbr's
+set -U BROWSER "chromium"
+
+# }}} universal var's #
+
+# fxn abbr's {{{ #
+
 abbr ag "grep-aliases"
 abbr bq "benq-brightness"
 abbr cpc "copy cat"
@@ -65,19 +79,26 @@ abbr hst "$EDITOR ~/.local/share/fish/fish_history"
 abbr ut "unix-timestamp"
 abbr uzr "unzip-rm"
 
-set -U BROWSER "chromium"
+# }}} fxn abbr's #
+
 abbr hm "cd $mfs_dir && hugo serve -D --disableFastRender"
 
+# school {{{ #
+
 # 309
-abbr r0t "revert-e3-json restaurants"
-abbr r0s "revert-e3-json reservations"
+# abbr r0t "./revert-e3-json restaurants"
+# abbr r0s "./revert-e3-json reservations"
 
 # 369
 abbr grc "grep-c"
 abbr grh "grep-headers"
 abbr rgh "rg-headers"
 
-abbr r6 "run-a3 f d o"
-abbr r6g "run-a3 f d g"
-abbr r6s "run-a3 s c o"
-abbr g6 "source $fish_fxn_dir/369/a3/gdb-a3-break.fish && gdb-a3-break c c"
+abbr r6 "run-a4 h e"
+
+# abbr r6 "run-a3 f d o"
+# abbr r6g "run-a3 f d g"
+# abbr r6s "run-a3 s c o"
+# abbr g6 "source $fish_fxn_dir/369/a3/gdb-a3-break.fish && gdb-a3-break c c"
+
+# }}} school #
diff --git a/fish/.config/fish/functions/369/a4/block-to-line.fish b/fish/.config/fish/functions/369/a4/block-to-line.fish
new file mode 100644
index 0000000..f4bb1ee
--- /dev/null
+++ b/fish/.config/fish/functions/369/a4/block-to-line.fish
@@ -0,0 +1,5 @@
+function block-to-line
+	set block_size 1024
+	set bytes_per_line 16
+	math "($block_size*$argv[1])/$bytes_per_line + 1"
+end
diff --git a/fish/.config/fish/functions/369/a4/hex.fish b/fish/.config/fish/functions/369/a4/hex.fish
new file mode 100644
index 0000000..5bad58e
--- /dev/null
+++ b/fish/.config/fish/functions/369/a4/hex.fish
@@ -0,0 +1,12 @@
+function hex
+	switch $argv[1]
+		case h
+			# print dec/bin.
+			printf "%d " (echo "ibase=16;obase=A;$argv[2]" | bc)
+			printf "%d\n" (echo "ibase=16;obase=2;$argv[2]" | bc)
+		case d
+			# print hex/bin.
+			printf "%s " (echo "obase=16;$argv[2]" | bc) 
+			printf "%d\n" (echo "obase=2;$argv[2]" | bc)
+	end
+end
diff --git a/fish/.config/fish/functions/369/a4/run-a4.fish b/fish/.config/fish/functions/369/a4/run-a4.fish
new file mode 100644
index 0000000..a1bf6ac
--- /dev/null
+++ b/fish/.config/fish/functions/369/a4/run-a4.fish
@@ -0,0 +1,29 @@
+function run-a4
+	# 1 = ex, 2 = img
+	printf '\033c' 
+	# and bear make clean
+	bear make 
+
+	set img_file 'imgs/emptydisk.img'
+	switch $argv[2]
+		case 1
+			set img_file 'imgs/onefile.img' 
+		case m
+			set img_file 'imgs/multilevel.img' 
+		case l
+			set img_file 'imgs/largefile.img' 
+	end
+
+	switch $argv[1]
+		case h
+			./ext2_helpers_tester 'imgs/multilevel.img' '/level1/level2/bfile'
+		case hg
+			gdb -ex "run" -ex "bt" -ex "q" \
+			--args ./ext2_helpers_tester './imgs/multilevel.img' '/level1/level2/level3//'
+		case m
+			./ext2_mkdir $img_file '/'
+			# ./ext2_mkdir 'imgs/multilevel.img' '/level1/level2/bfile'
+		case '*'
+			./readimage $img_file
+	end
+end
diff --git a/fish/.config/fish/functions/grep-aliases.fish b/fish/.config/fish/functions/grep-aliases.fish
index e136bc9..094a3a9 100644
--- a/fish/.config/fish/functions/grep-aliases.fish
+++ b/fish/.config/fish/functions/grep-aliases.fish
@@ -1,5 +1,5 @@
 function grep-aliases
 	set key_aliases /home/kevin/linux-config/aliases/key_aliases
-	# grep $argv[1] $key_aliases
-	rg "^$argv[1]" $key_aliases 
+	rg $argv[1] $key_aliases
+	# rg "^$argv[1]" $key_aliases
 end
diff --git a/fish/.config/fish/functions/revert-e3-json.fish b/fish/.config/fish/functions/revert-e3-json.fish
deleted file mode 100644
index bf372b7..0000000
--- a/fish/.config/fish/functions/revert-e3-json.fish
+++ /dev/null
@@ -1,3 +0,0 @@
-function revert-e3-json
-	cp $argv[1]_example.json $argv[1].json
-end
diff --git a/i3/.config/i3/config b/i3/.config/i3/config
index 293cca8..21166d8 100644
--- a/i3/.config/i3/config
+++ b/i3/.config/i3/config
@@ -41,16 +41,17 @@ bindsym Mod4+h exec echo 'kevin.mok@live.ca' | xclip -selection clipboard
 bindsym Mod4+$mod+m exec pass -c uoft/markus
 bindsym Mod4+n exec urxvt -e nvim
 bindsym Mod4+o exec xclip -selection clipboard ~/.password-store/social/gmail
+bindsym Mod4+$mod+o exec xset dpms force off
 # bindsym Mod4+p workspace $ws4; exec pgadmin3
 # bindsym Mod4+p exec pycharm
 bindsym Mod4+p exec passmenu
+# bindsym Mod4+$mod+p exec notify-send "ping" "$(ping -c 3 -W 1 8.8.8.8)"
 bindsym Mod4+q exec qdirstat
 bindsym Mod4+r exec urxvt -e ranger
 bindsym Mod4+$mod+r exec notify-send "watson restart" "$(watson restart)"
 bindsym control+$mod+s exec systemctl suspend
-bindsym Mod4+$mod+s exec xset dpms force off
 # bindsym Mod4+t exec st
-bindsym Mod4+t exec xclip -selection clipboard ~/.password-store/social/trapbot
+bindsym Mod4+$mod+t exec xclip -selection clipboard ~/.password-store/social/trapbot
 bindsym Mod4+u exec echo 'kevin.mok@mail.utoronto.ca' | xclip -selection clipboard
 bindsym Mod4+$mod+u exec pass -c uoft/acorn
 bindsym Mod4+w exec notify-send "watson status" "$(watson status)"
@@ -231,7 +232,8 @@ set $ws5 "5 "
 workspace $ws5 output $samsung
 assign [class="Steam"] $ws5
 bindsym $mod+F5 workspace $ws5; exec $browser
-bindsym Mod4+g workspace $ws5; layout stacking; exec urxvt -e steam
+# bindsym Mod4+g workspace $ws5; layout stacking; exec urxvt -e steam
+bindsym Mod4+t workspace $ws5; exec thunderbird
 
 set $ws6 "6 "
 workspace $ws6 output $samsung
diff --git a/ranger/.config/ranger/rc.conf b/ranger/.config/ranger/rc.conf
index cc460f5..45e3410 100644
--- a/ranger/.config/ranger/rc.conf
+++ b/ranger/.config/ranger/rc.conf
@@ -668,11 +668,14 @@ set preview_images_method w3m
 
 #  }}} image preview # 
 
+#  custom {{{ # 
+
 # editing ranger config
 map R chain shell nvim -p ~/.config/ranger/rc.conf %rangerdir/config/rc.conf; source ~/.config/ranger/rc.conf
 map rr source ~/.config/ranger/rc.conf
 
-# backgrounds
+#  backgrounds {{{ # 
+
 map w shell /usr/bin/wal -i %f
 map bde shell mv %f dim/editing
 map bdn shell mv %f dim/non-editing
@@ -681,6 +684,8 @@ map bbn shell mv %f bright/non-editing
 map be shell mv %f editing
 map bn shell mv %f non-editing
 
+#  }}} backgrounds # 
+
 # bulk rename
 map cw eval fm.execute_console("bulkrename") if fm.thisdir.marked_items else fm.open_console("rename ")
 
@@ -698,3 +703,5 @@ map dg shell dragon-drag-and-drop -a -x %p
 # a plugin that adds file glyphs / icon support to Ranger:
 # https://github.com/alexanderjeurissen/ranger_devicons
 default_linemode devicons
+
+#  }}} custom # 
diff --git a/txt/exclude-dirs-backup.txt b/txt/exclude-dirs-backup.txt
index d4c3ce5..08b42fd 100644
--- a/txt/exclude-dirs-backup.txt
+++ b/txt/exclude-dirs-backup.txt
@@ -1,3 +1,6 @@
+/home/kevin/.android
+/home/kevin/.AndroidStudio3.3
+/home/kevin/Android
 /home/kevin/.cache
 /home/kevin/.local/share/Steam
 /lost+found
diff --git a/txt/key_dirs.txt b/txt/key_dirs.txt
index 525a186..f935c0f 100644
--- a/txt/key_dirs.txt
+++ b/txt/key_dirs.txt
@@ -53,8 +53,11 @@ e3 /home/kevin/school/309/e3
 
 # 369
 6 /home/kevin/school/369
+6l /home/kevin/school/369/notes/lectures
+
 6f /home/kevin/linux-config/fish/.config/fish/functions/369/a3
-a3 /home/kevin/school/369/a3/a3
+a4d /home/kevin/school/369/a4/a4
+a43 /home/kevin/school/369/a4-3/fs3
 
 hp /home/kevin/school/hps
 lt /home/kevin/school/latex-notes
diff --git a/txt/nzxt-aur.txt b/txt/nzxt-aur.txt
index 4e76342..e4eba0a 100644
--- a/txt/nzxt-aur.txt
+++ b/txt/nzxt-aur.txt
@@ -1,14 +1,18 @@
+android-studio
 bear
 browserpass
 chromium-widevine
-cliqz
+cliqz-bin
 discord
 dragon-drag-and-drop-git
 ffcast
+flashplugin-focusfix
 htop-vim-git
 i3blocks-git
 linux-kevin
 linux-kevin-headers
+linux-nzxt
+linux-nzxt-headers
 lua-cjson
 nx3-all
 peaclock
@@ -26,11 +30,11 @@ systemd-numlockontty
 texlive-local-algorithmicx
 texlive-local-algorithms
 texlive-local-enumitem
-texlive-local-hyperref
 texlive-local-ifmtarg
 texlive-local-multirow
 texlive-local-numprint
 texlive-local-pgfplots
+texlive-local-siunitx
 texlive-local-tkz-base
 texlive-local-tkz-euclide
 texlive-local-xifthen
@@ -38,8 +42,9 @@ texlive-localmanager-git
 tor-browser
 trizen
 ttf-emojione
+vidir
 watson
 weechat-vimode-git
 wego
-xboxdrv
 yad
+yay
diff --git a/txt/nzxt-pkgs.txt b/txt/nzxt-pkgs.txt
index b1a9192..a093987 100644
--- a/txt/nzxt-pkgs.txt
+++ b/txt/nzxt-pkgs.txt
@@ -30,7 +30,6 @@ e2fsprogs
 electrum
 encfs
 evince
-evolution
 fakeroot
 fd
 feh
@@ -39,6 +38,7 @@ filesystem
 findutils
 firefox
 fish
+flashplugin
 flex
 fzf
 gawk
@@ -52,6 +52,8 @@ glibc
 grep
 grub
 gzip
+hexyl
+highlight
 hugo
 i3-gaps
 i3status
@@ -72,7 +74,6 @@ logrotate
 lolcat
 lsd
 lsof
-lutris
 lvm2
 lxappearance
 make
@@ -82,6 +83,7 @@ mdadm
 meld
 mpv
 nano
+ncdu
 neofetch
 neomutt
 neovim
@@ -117,6 +119,7 @@ python-dbus
 python-pip
 python-pywal
 python-setuptools
+qemu
 qrencode
 ranger
 redshift
@@ -143,9 +146,12 @@ tar
 texinfo
 texlive-core
 the_silver_searcher
+thunderbird
 tidy
+time
 tmux
 tor
+transmission-cli
 transmission-gtk
 ttf-dejavu
 ttf-font-awesome
@@ -158,10 +164,8 @@ valgrind
 vi
 vim
 virtualbox
-vlc
 w3m
 which
-wine
 wireless_tools
 wkhtmltopdf
 wpa_actiond
@@ -187,7 +191,6 @@ xfsprogs
 xorg-bdftopcf
 xorg-iceauth
 xorg-luit
-xorg-mkfontdir
 xorg-mkfontscale
 xorg-server
 xorg-sessreg
diff --git a/vim/.vimrc b/vim/.vimrc
index 907914c..f3d71fa 100644
--- a/vim/.vimrc
+++ b/vim/.vimrc
@@ -1,23 +1,36 @@
 " set x=y {{{ "
-au BufWinEnter * set relativenumber
-" set background=dark
-set encoding=utf-8
-set background=light
-" set t_Co=256
-filetype plugin on
-syntax on
-set tabstop=4
-set tw=80
-set linebreak
-" set colorcolumn=80
-set shiftwidth=4
+
 set autoindent
-" set mouse=c
-set mouse=a
+set autoread
+set background=dark
+" set colorcolumn=80
 set clipboard+=unnamedplus
-set foldmethod=marker
+set diffopt=filler,context:3
+set encoding=utf-8
+set expandtab
 " set foldmethod=indent
+set foldmethod=marker
+set hlsearch
+set linebreak
 set linespace=5
+set mouse=a
+" set mouse=c
+" set noswapfile
+set relativenumber
+set shiftwidth=4
+set tabstop=4
+" set t_Co=256
+" set timeoutlen=500
+set timeoutlen=350
+set tw=80
+set updatetime=1000
+
+autocmd VimResized * wincmd =
+filetype plugin on
+filetype indent on
+syntax on
+au CursorHold,CursorHoldI * checktime
+
 " cursor indicator {{{ "
 
 " set listchars=tab:\|\
@@ -26,25 +39,14 @@ set linespace=5
 " set cursorline
 
 " }}} cursor indicator "
-set diffopt=filler,context:3
 
-" set timeoutlen=500
-set timeoutlen=350
-set hlsearch
-" set noswapfile
-" let maplocalleader="-"
-let maplocalleader="\\"
 " }}} set x=y "
 
 " commands for file types {{{ "
 
-autocmd VimResized * wincmd =
 autocmd BufNewFile,BufRead .* set syntax=sh
-filetype plugin on
-filetype indent on
-autocmd FileType *css,htmldjango,html,javascript,markdown,tex,yaml set tabstop=2 shiftwidth=2 expandtab
-autocmd BufNewFile,BufRead *.txt set tabstop=2 shiftwidth=2 expandtab
-autocmd BufNewFile,BufRead *.md set filetype=markdown
+autocmd FileType *css,htmldjango,html,javascript,markdown,tex,text,yaml set tabstop=2 shiftwidth=2
+" autocmd BufNewFile,BufRead *.md set filetype=markdown
 autocmd Filetype markdown set textwidth=0
 " autocmd Filetype html set foldmarker=0
 
@@ -55,7 +57,6 @@ autocmd FileType sh map <F8> :!clear && shellcheck %<CR>
 " autocmd FileType tex map <F8> :VimtexCompile<CR>:VimtexView<CR>
 autocmd VimEnter *.tex VimtexCompile
 autocmd VimLeave *.tex !tex-clean %:p
-" map <F9> :VimtexCompile<CR>
 
 " " auto-reload vimrc {{{ "
 
@@ -81,7 +82,7 @@ autocmd BufNewFile,BufRead key_* map <F1> :silent !sync-shortcuts<CR>
 
 " }}} commands for specific files "
 
-" vim-plug {{{ "
+" vim-plug {{{ 
 " plug auto-install
 if empty(glob('~/.vim/autoload/plug.vim'))
 	silent !curl -fLo ~/.vim/autoload/plug.vim --create-dirs
@@ -200,8 +201,13 @@ Plug 'PotatoesMaster/i3-vim-syntax'
 Plug 'scrooloose/nerdtree', { 'on': 'NERDTreeToggle' }
 Plug 'terryma/vim-multiple-cursors'
 	" let g:multi_cursor_select_all_word_key='<C-a>'
+	let g:multi_cursor_exit_from_visual_mode=0
+	let g:multi_cursor_exit_from_insert_mode=0
 Plug 'dag/vim-fish'
+Plug 'shime/vim-livedown'
 Plug 'tpope/vim-fugitive'
+" auto reload file
+Plug 'djoshea/vim-autoread'
 
 call plug#end()
 
@@ -218,12 +224,16 @@ map <F4> :xa<CR>
 map <F5> :q!<CR>
 map <F6> :qa!<CR>
 map <F7> :AutoSaveToggle<CR>
+" reload file
+nnoremap <F9> :e<CR>
 nnoremap <F10> :set paste<CR>"+p:set nopaste<CR>
+nnoremap <F11> :set paste<CR>"*p:set nopaste<CR>
 " }}} function keys "
 
 map <S-Enter> O<ESC>
 " swap text visually
 vnoremap <C-P> <Esc>`.``gvP``P
+ino <C-A> <C-O>yiW<End>=<C-R>=<C-R>0<CR>
 
 " splits {{{ "
 nnoremap <C-Down> <C-W><C-J>
@@ -237,6 +247,7 @@ nnoremap <C-w> <C-W>|
 
 " leader mappings {{{ "
 let mapleader="\<Space>"
+" let maplocalleader="-"
 
 " find alias
 nnoremap <leader>a /^ <Left>
@@ -285,10 +296,8 @@ nnoremap <leader>plc :PlugClean<CR>
 nnoremap <leader>plu :PlugUpdate<CR>
 " don't break lines
 nnoremap <leader>py :set tw=0<CR>
-" reload file
-nnoremap <leader>r :e<CR>
 " replace in next x lines
-nnoremap <leader>re q:i.,.+s///g<ESC>Fsi
+nnoremap <leader>r q:i.,.+s///g<ESC>Fsi
 " replace in line
 nnoremap <leader>rl q:i.s///g<left><left><left>
 " replace in visual selection
@@ -329,6 +338,8 @@ nnoremap <leader>z za
 
 " Local Mappings {{{ "
 
+let maplocalleader="\\"
+
 " tex {{{ "
 
 autocmd Filetype tex inoremap <localleader>bt \bowtie
@@ -367,6 +378,8 @@ autocmd Filetype tex inoremap <localleader>tx $t(x)$
 
 " }}} tex "
 
+autocmd Filetype c inoremap <localleader>uc unsigned char
+
 autocmd Filetype fish inoremap <localleader>1 $argv[1]
 autocmd Filetype fish inoremap <localleader>2 $argv[2]
 
diff --git a/zathura/.config/zathura/zathurarc b/zathura/.config/zathura/zathurarc
index f4cc787..9b8b0ec 100644
--- a/zathura/.config/zathura/zathurarc
+++ b/zathura/.config/zathura/zathurarc
@@ -1,3 +1,4 @@
 set recolor true
 set recolor-darkcolor "#dcdccc"
 set recolor-lightcolor "#1f1f1f"
+set selection-clipboard clipboard