sudo: keep space before the command to ignore it in the history (#9178)

Co-authored-by: Marc Cornellà <marc.cornella@live.com>

README.md

@@ -273,7 +273,7 @@ DISABLE_AUTO_UPDATE=true
 If you'd like to upgrade at any point in time (maybe someone just released a new plugin and you don't want to wait a week?) you just need to run:
 
 ```shell
-upgrade_oh_my_zsh
+omz update
 ```
 
 Magic! 🎉

plugins/sudo/sudo.plugin.zsh

@@ -14,6 +14,14 @@
 
 sudo-command-line() {
     [[ -z $BUFFER ]] && LBUFFER="$(fc -ln -1)"
+
+    # Save beginning space
+    local WHITESPACE=""
+    if [[ ${LBUFFER:0:1} == " " ]] ; then 
+        WHITESPACE=" "
+        LBUFFER="${LBUFFER:1}"
+    fi
+
     if [[ -n $EDITOR && $BUFFER == $EDITOR\ * ]]; then
         if [[ ${#LBUFFER} -le ${#EDITOR} ]]; then
             RBUFFER=" ${BUFFER#$EDITOR }"
@@ -38,6 +46,9 @@ sudo-command-line() {
     else
         LBUFFER="sudo $LBUFFER"
     fi
+
+    # Preserve beginning space
+    LBUFFER="${WHITESPACE}${LBUFFER}"
 }
 zle -N sudo-command-line
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