I found one thread where the author wanted to NOT use the space to auto-complete but I DO want the space to auto-complete and it used to work for me that way about a month ago. I don't know what happened, but a lot of things changed then. Anyway, I remember that I had to add a blank is some string somewhere that was in no way obvious so the VA would recognize that a space character was not valid in a variable name. Where is it?
VA Options -> Advanced -> Listboxes -> Selections committed with: Any character not valid in a symbol VA Options -> Advanced -> Listboxes -> Selections committed with: Any character not valid in a symbol (C/C++ Members)
depending on your IDE and language, you might be looking for the IDE setting:
IDE tools menu -> Options -> Text Editor -> C/C++ -> Advanced -> Member List Commit Characters =
and you can add a space to this list of characters.