Prune and improve zshrc

- stop loading unneeded zsh modules
- use $HISTSIZE from environment
- create history directory if it doesn't exist
- add "e" alias for $EDITOR

1 files changed, 4 insertions, 9 deletions

diff --git a/tw/home/files/zshrc b/tw/home/files/zshrc
index 3bde2704..757f679e 100644
--- a/tw/home/files/zshrc
+++ b/tw/home/files/zshrc
@@ -6,15 +6,9 @@ if [ -d ~/.guix-home/profile/share/zsh/site-functions ]; then
   fpath+=(~/.guix-home/profile/share/zsh/site-functions)
 fi
 
-zmodload zsh/attr
-zmodload -F zsh/cap b:cap
-zmodload zsh/datetime
-zmodload zsh/system
-zmodload zsh/terminfo
-
 setopt extendedglob interactivecomments
 
-# So we don't have to call tput.
+# So we don't have to call tput. Used in zstyle args below.
 autoload -Uz colors
 colors
 
@@ -38,9 +32,9 @@ bindkey '^[[F' vi-end-of-line                   # end
 
 ## History setup
 # HISTSIZE should be set through Guix's home environment service.
-HISTSIZE=10000000
+SAVEHIST=${HISTSIZE=10000000}
 HISTFILE=${XDG_DATA_HOME:-$HOME/.local/share}/zsh/history
-SAVEHIST=$HISTSIZE
+[ -e "$HISTFILE" ] || mkdir -p "${HISTFILE%/*}"
 setopt appendhistory sharehistory incappendhistory extendedhistory histverify histreduceblanks
 
 ## Completion setup
@@ -89,6 +83,7 @@ else
 fi
 
 ## Aliases
+alias e="${VISUAL-$EDITOR}"
 # Use ASYNC_EDITOR so I can continue using the shell while the editor
 # remains open in a separate window.
 alias em="$ASYNC_EDITOR"