lstripBlocks config strips whitespace not just from start of line

[jnothman]

The Jinja lstrip_blocks config is meant to strip white space preceding a tag from the start of a line.

As far as I can tell withLstripBlocks in Jinjava will currently not just strip:

hello
   {% if true %}world{% endif %}

to

hello
world

which is correct, but also strips

hello {% if true %}world{% endif %}

to

hello world

which is not according to spec.