Call original widget before moving cursor when accepting suggestion

The check on length of `$POSTDISPLAY` is in support of the test for
`vi-delete` on the last char of the buffer with `dl`.

Fixes issue #482.

src/widgets.zsh

@@ -119,7 +119,7 @@ _zsh_autosuggest_suggest() {
 
 # Accept the entire suggestion
 _zsh_autosuggest_accept() {
-	local -i max_cursor_pos=$#BUFFER
+	local -i retval max_cursor_pos=$#BUFFER
 
 	# When vicmd keymap is active, the cursor can't move all the way
 	# to the end of the buffer
@@ -127,7 +127,9 @@ _zsh_autosuggest_accept() {
 		max_cursor_pos=$((max_cursor_pos - 1))
 	fi
 
-	if (( $CURSOR != $max_cursor_pos )); then
+	# If we're not in a valid state to accept a suggestion, just run the
+	# original widget and bail out
+	if (( $CURSOR != $max_cursor_pos || !$#POSTDISPLAY )); then
 		_zsh_autosuggest_invoke_original_widget $@
 		return
 	fi
@@ -139,6 +141,11 @@ _zsh_autosuggest_accept() {
 	# Remove the suggestion
 	unset POSTDISPLAY
 
+	# Run the original widget before manually moving the cursor so that the
+	# cursor movement doesn't make the widget do something unexpected
+	_zsh_autosuggest_invoke_original_widget $@
+	retval=$?
+
 	# Move the cursor to the end of the buffer
 	if [[ "$KEYMAP" = "vicmd" ]]; then
 		CURSOR=$(($#BUFFER - 1))
@@ -146,7 +153,7 @@ _zsh_autosuggest_accept() {
 		CURSOR=$#BUFFER
 	fi
 
-	_zsh_autosuggest_invoke_original_widget $@
+	return $retval
 }
 
 # Accept the entire suggestion and execute it

zsh-autosuggestions.zsh

@@ -381,7 +381,7 @@ _zsh_autosuggest_suggest() {
 
 # Accept the entire suggestion
 _zsh_autosuggest_accept() {
-	local -i max_cursor_pos=$#BUFFER
+	local -i retval max_cursor_pos=$#BUFFER
 
 	# When vicmd keymap is active, the cursor can't move all the way
 	# to the end of the buffer
@@ -389,7 +389,9 @@ _zsh_autosuggest_accept() {
 		max_cursor_pos=$((max_cursor_pos - 1))
 	fi
 
-	if (( $CURSOR != $max_cursor_pos )); then
+	# If we're not in a valid state to accept a suggestion, just run the
+	# original widget and bail out
+	if (( $CURSOR != $max_cursor_pos || !$#POSTDISPLAY )); then
 		_zsh_autosuggest_invoke_original_widget $@
 		return
 	fi
@@ -401,6 +403,11 @@ _zsh_autosuggest_accept() {
 	# Remove the suggestion
 	unset POSTDISPLAY
 
+	# Run the original widget before manually moving the cursor so that the
+	# cursor movement doesn't make the widget do something unexpected
+	_zsh_autosuggest_invoke_original_widget $@
+	retval=$?
+
 	# Move the cursor to the end of the buffer
 	if [[ "$KEYMAP" = "vicmd" ]]; then
 		CURSOR=$(($#BUFFER - 1))
@@ -408,7 +415,7 @@ _zsh_autosuggest_accept() {
 		CURSOR=$#BUFFER
 	fi
 
-	_zsh_autosuggest_invoke_original_widget $@
+	return $retval
 }
 
 # Accept the entire suggestion and execute it