Fixed a bug if a snippet contains folding markers. Call normal zv (show current line) after each insertion

plugin/UltiSnips/Buffer.py

@@ -51,6 +51,8 @@ class TextBuffer(Buffer):
     def __str__(self):
         return '\n'.join(self._lines)
 
+from debug import debug
+
 class VimBuffer(Buffer):
     def __init__(self, before, after):
         self._bf = before
@@ -62,6 +64,11 @@ class VimBuffer(Buffer):
             vim.current.buffer[a.start:a.stop] = b
         else:
             vim.current.buffer[a] = b
+
+        # Open any folds this might have created
+        vim.current.window.cursor = a.start + 1, 0
+        vim.command("normal zv")
+
     def __repr__(self):
         return "VimBuffer()"
 

test.py

@@ -2030,6 +2030,24 @@ class SelectModeMappings_BufferLocalMappings_ECR(_SelectModeMappings):
     buffer_maps = ("H", "blah")
     wanted = "Hello"
 
+####################
+# Folding problems #
+####################
+class FoldingEnabled_SnippetWithFold_ExpectNoFolding(_VimTest):
+    def _options_on(self):
+        self.send(":set foldlevel=0\n")
+        self.send(":set foldmethod=marker\n")
+    def _options_off(self):
+        self.send(":set foldlevel=0\n")
+        self.send(":set foldmethod=manual\n")
+
+    snippets = ("test", r"""Hello {{{
+${1:Welt} }}}""")
+    keys = "test" + EX + "Ball"
+    wanted = """Hello {{{
+Ball }}}"""
+
+