This reverts commit 2a59d2ae.

Because apparently, while designing the Objective-C language, somebody
thought it was a world-class idea to allow any white-space between the
'@' character and the subsequent keyword. With this fix, we now
correctly parse:
    @  dynamic
and:
    @
      selector
and:
    @"foo"
     "bar"
    @"mooze"
(This last one is 1 single string split over multiple lines.)
Wonderful, isn't it?

What we (and Clang) do not support, but what GCC supports is something
like:
   @"foo"@@  "bar"  @"mooze"  @@
which is equivalent to @"foobarmooze".

foreach()-Loops.

Avoids some annoyance for people using case-sensitive completion, when
unrelated completions items would get higher relevance because they
start with the typed string when matched case-insensitively.

In case-insensitive mode, a case-sensitive prefix match now does get a
higher relevance than a case-insensitive match.

Reviewed-by: con

Even when an upper case character can also match a lower case one, it
should only be treated as a CamelCase match when the matched character
is also upper case. This avoids some false positives.

Also, the part that allows a word in a CamelCase identifier to be
truncated should never be matched case-insensitively.

By default now only the first letter is case-sensitive. It is still
possible to choose full or no case-sensitivity as well.

Task-number: QTCREATORBUG-236
Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>

Encapsulate the details.

Moved Completion::getCompletion() in ICompletionCollector and made the filtering of completion items more C++ friendly.

By setting the window and button text colors to the tool tip text color,
since a tool tip background is drawn.

Task-number: QTCREATORBUG-322

When constructor completion was attempted on a base class specified in a
class declaration, a null pointer reference would occur.

Task-number: QTCREATORBUG-321
Reviewed-by: Christian Kamm <christian.d.kamm@nokia.com>

Done with Erik Verbruggen

They should always use the function parameter tooltip.

This fixes a bug where you were offered completion for
C foo( -> C foo(int x)
if C had a constructor taking int x.

Reviewed-by: Thorbjørn Lindeijer <thorbjorn.lindeijer@nokia.com>

Reviewed-by: Thorbjørn Lindeijer

Instead of just completing
void A::foo(|) -> void A::foo(int i|), we now complete
void A::foo(|) -> void A::foo(int i) const|
where | represents the place of the cursor.

Reviewed-by: Thorbjørn Lindeijer <thorbjorn.lindeijer@nokia.com>

Reviewed-by: Roberto Raggi <roberto.raggi@nokia.com>

You now get the function parameters as a completion suggestion when
declaring or defining a function. The tooltip for function calls
is unchanged.

Reviewed-by: Roberto Raggi <roberto.raggi@nokia.com>
(cherry picked from commit 202fef42)

You now get the function parameters as a completion suggestion when
declaring or defining a function. The tooltip for function calls
is unchanged.

Reviewed-by: Roberto Raggi <roberto.raggi@nokia.com>

Share code with ResolveExpression.

struct foo {
  int m_zoo;

  foo(): m_ // cursor is here.