fix csi_H (off-by-one error)

diff --git a/terminal.coffee b/terminal.coffee
index 913d874..d5830c5 100644 (file)
--- a/terminal.coffee
+++ b/terminal.coffee
@@ -114,11 +114,9 @@ class Terminal
 
        # set cursor position (one based)
        csi_H: (row, column) ->
-               row = 0 + @fix_esc_arg row, 1
-               column = 0 + @fix_esc_arg column, 1
-
-               # convert to 0 base
-               column -= 1
+               # handle blank/missing args and convert to 0 base
+               row = @fix_esc_arg(row, 1) - 1
+               column = @fix_esc_arg(column, 1) - 1
 
                #clamp values
                if column < 0
@@ -160,6 +158,7 @@ class Terminal
                                                @attributes[row][i] = @a
                        else
                                console.log "confusing arg for csi_J: #{direction}"
+               return
 
        # clear (some or all of) current line
        csi_K: (direction) ->
@@ -183,6 +182,7 @@ class Terminal
                                        @attributes[@y][i] = @a
                        else
                                console.log "confusing arg for csi_K: #{direction}"
+               return
        
        # misc
        csiq_h: ->