Revert fc usage in calculating suggestion

As far as I know, `fc` makes it impossible to tell whether history items
used an actual newline character or the string "\n". Pulling from the
`$history` array gives a more accurate representation of the actual
command that was run.

src/strategies/default.zsh

@@ -9,5 +9,12 @@
 _zsh_autosuggest_strategy_default() {
 	setopt localoptions EXTENDED_GLOB
 
-	fc -lnrm "${1//(#m)[\\()\[\]|*?~]/\\$MATCH}*" 1 2>/dev/null | head -n 1
+	local prefix="${1//(#m)[\\()\[\]|*?~]/\\$MATCH}"
+
+	# Get the keys of the history items that match
+	local -a histkeys
+	histkeys=(${(k)history[(r)$prefix*]})
+
+	# Echo the value of the first key
+	echo -E "${history[$histkeys[1]]}"
 }