Use sources_non_forked folder for pathogen path, with sources_non_forked_fallback folder as fallback.

sources_non_forked_fallback/vim-snipmate/indent/snippets.vim

@@ -0,0 +1,32 @@
+" Simple indent support for SnipMate snippets files
+
+if exists('b:did_indent')
+    finish
+endif
+let b:did_indent = 1
+
+setlocal nosmartindent
+setlocal indentkeys=!^F,o,O,=snippet,=version,=extends
+setlocal indentexpr=GetSnippetIndent()
+
+if exists("*GetSnippetIndent")
+    finish
+endif
+
+function! GetSnippetIndent()
+    let line = getline(v:lnum)
+    let prev_lnum = v:lnum - 1
+    let prev_line = prev_lnum != 0 ? getline(prev_lnum) : ""
+
+    if line =~# '\v^(snippet|extends|version) '
+        return 0
+    elseif indent(v:lnum) > 0
+        return indent(v:lnum)
+    elseif prev_line =~# '^snippet '
+        return &sw
+    elseif indent(prev_lnum) > 0
+        return indent(prev_lnum)
+    endif
+
+    return 0
+endfunction