From 8e715e94e59e5bd05fea8e073de2750df2be1f8f Mon Sep 17 00:00:00 2001
From: Jason Woofenden <jason@jasonwoof.com>
Date: Sat, 26 Mar 2016 17:45:43 -0400
Subject: [PATCH] fix backspace of last character in a block

---
 editor.coffee |   27 ++++++++++++++++++++-------
 1 file changed, 20 insertions(+), 7 deletions(-)

diff --git a/editor.coffee b/editor.coffee
index 636bf19..8367d09 100644
--- a/editor.coffee
+++ b/editor.coffee
@@ -1050,13 +1050,21 @@ class PeachHTML5Editor
 					@kill_cursor
 				return
 		else if @cursor.i is 0
-			console.log 'not implemented yet'
+			console.log 'unimplemented: backspace at start of non-empty tag'
 			# TODO if block, merge parent into prev
 			# TODO if inline, delete char from prev text node
 			return false
 		else
 			# TODO handle case of removing last char
-			@remove_character @cursor.n, @cursor.i - 1
+			# CONTINUE
+			if @is_only_char_in_tag @cursor.n
+				if is_display_block @cursor.n.parent.el
+					@cursor.n.el.textContent = @cursor.n.text = ' '
+				else
+					console.log "unimplemented: delete last char in inline" # FIXME
+					return
+			else
+				@remove_character @cursor.n, @cursor.i - 1
 			@adjust_whitespace_style @cursor.n
 			@changed()
 			new_cursor = new_cursor_position n: @cursor.n, i: @cursor.i - 1
@@ -1064,6 +1072,7 @@ class PeachHTML5Editor
 				@move_cursor new_cursor
 			else
 				@kill_cursor()
+		return
 	clear_dom: -> # remove all the editable content (and cursor, overlays, etc)
 		while @idoc.body.childNodes.length
 			@idoc.body.removeChild @idoc.body.childNodes[0]
@@ -1155,16 +1164,20 @@ class PeachHTML5Editor
 				if needle is n.attrs.style.substr n.attrs.style.length - needle
 					n.attrs.style = n.attrs.style.substr 0, n.attrs.style.length - needle
 					n.el.setAttribute n.attrs.style
+	# true if n is text node with only one caracter, and the only child of a tag
+	is_only_char_in_tag: (n, i) ->
+		return false unless n.type is 'text'
+		return false unless n.text.length is 1
+		return false if n.parent is @tree_parent
+		return false unless n.parent.children.length is 1
+		return true
 	# true if n is text node with just a space in it, and the only child of a tag
 	is_lone_space: (n, i) ->
 		return false unless n.type is 'text'
 		return false unless n.text is ' '
 		return false if n.parent is @tree_parent
-		if n.parent.children.length is 1
-			if n.parent.children[0] is n
-				# n is only child
-				return true
-		return false
+		return false unless n.parent.children.length is 1
+		return true
 	# detect special case: typing before a space that's the only thing in a block/doc
 	# reason: enter key creates blocks with just a space in them
 	insert_should_replace: (n, i) ->
-- 
1.7.10.4