sh: Fix quoting

desktop/.config/river/init

@@ -160,8 +160,8 @@ riverctl map normal $mod+Shift Comma send-to-output previous
 
 # set up 10 tags (with '0' opening the 10th one)
 for i in $(seq 0 9); do
-    tags=$((1 << (i - 1)))
-    if [ "$i" -eq 0 ]; then tags=$((1 << 9)); fi
+    tags="$((1 << (i - 1)))"
+    if [ "$i" -eq 0 ]; then tags="$((1 << 9))"; fi
 
     # Mod+[1-9] to focus tag [0-8]
     riverctl map normal $mod "$i" set-focused-tags $tags

sh/.config/sh/alias.d/enable-fasd-hook.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 # more usage instructions at https://github.com/clvv/fasd
-# eval "$(fasd --init posix-hook posix_alias bash-hook zsh-hook zsh-ccomp zsh-ccomp-install zsh-wcomp zsh-wcomp-install)"
+# exist fasd && eval "$(fasd --init posix-hook posix_alias bash-hook zsh-hook zsh-ccomp zsh-ccomp-install zsh-wcomp zsh-wcomp-install)"
 exist fasd && eval "$(fasd --init auto)"
 
 # any

sh/.config/sh/env

@@ -47,7 +47,7 @@ export LC_ALL="en_US.UTF-8"
 export LANG="en_US.UTF-8"
 
 # if we forgot to set it treat bash as default
-export SHELL=${SHELL:-/bin/bash}
+export SHELL="${SHELL:-/bin/bash}"
 
 export TERM=xterm-256color