Split up rsync aliases & improve comments

config/zsh/aliases.zsh

@@ -21,15 +21,27 @@ alias gurl='curl --compressed'
 alias shutdown='sudo shutdown'
 alias reboot='sudo reboot'
 
-# A rsync that respects gitignore
+# An rsync that respects gitignore
 rcp() {
-  rsync -azPJ --delete --delete-after \
+  # -a = -rlptgoD
+  #   -r = recursive
+  #   -l = copy symlinks as symlinks
+  #   -p = preserve permissions
+  #   -t = preserve mtimes
+  #   -g = preserve owning group
+  #   -o = preserve owner
+  # -z = use compression
+  # -P = show progress on transferred file
+  # -J = don't touch mtimes on symlinks (always errors)
+  rsync -azPJ \
     --include=.git/ \
     --filter=':- .gitignore' \
     --filter=":- $XDG_CONFIG_HOME/git/ignore" \
     "$@"
 }; compdef rcp=rsync
-rcpu() { rcp --chmod=go= "$@" }
+alias rcpd='rcp --delete --delete-after'
+alias rcpu='rcp --chmod=go='
+alias rcpdu='rcpd --chmod=go='
 
 alias y='xclip -selection clipboard -in'
 alias p='xclip -selection clipboard -out'