Enabling possibility to have { and } in (latex) index items

In the doxygen manual the index items for \{ and \} were missing due to the missing support for the usage of { and } in parts of the code.
This patch fixes this problem by introducing 2 new latex commands. See also http://tex.stackexchange.com/questions/153291/index-unmatched-braces-in-latex
Further improvements in the index are:
- consistency in different places
- correction of index for \::
- placing \~ on a more logical place (together with other special characters, ~ is in the ASCII table after a-z whilst other characters are before this range)

2 files changed, 8 insertions, 2 deletions

diff --git a/doc/commands.doc b/doc/commands.doc
index 7b598f6..15d6827 100644
--- a/doc/commands.doc
+++ b/doc/commands.doc
@@ -2696,6 +2696,8 @@ class Receiver
 <hr>
 \section cmdfcurlyopen \\f{environment}{
 
+  \addindex \\f{
+
   Marks the start of a formula that is in a specific environment.
   \note The second \c { is optional and is only to help editors (such as \c Vim) to
   do proper syntax highlighting by making the number of opening and closing braces
@@ -2705,6 +2707,8 @@ class Receiver
 <hr>
 \section cmdfcurlyclose \\f}
 
+  \addindex \\f}
+
   Marks the end of a formula that is in a specific environment.
   \sa section \ref cmdfcurlyopen "\\f{" and section \ref formulas "formulas".
 
@@ -3030,7 +3034,7 @@ class Receiver
 \section cmdchardot \\.
 
   \addindex \\\.
-  This command writes a dot (\c .) to the output. This can be useful to 
+  This command writes a dot (`.`) to the output. This can be useful to 
   prevent ending a brief description when JAVADOC_AUTOBRIEF is enabled
   or to prevent starting a numbered list when the dot follows a number at
   the start of a line.
@@ -3038,7 +3042,7 @@ class Receiver
 <hr>
 \section cmddcolon \\::
 
-  \addindex \\\::
+  \addindex \\::
   This command writes a double colon (\c \::) to the output. This
   character sequence has to be escaped in some cases, because it is used
   to reference to documented entities.
diff --git a/doc/doxygen.sty b/doc/doxygen.sty
index 45bec34..8013dad 100644
--- a/doc/doxygen.sty
+++ b/doc/doxygen.sty
@@ -381,6 +381,8 @@
 }
 
 \newcommand{\doxyref}[3]{\textbf{#1} (\textnormal{#2}\,\pageref{#3})}
+\newcommand{\lcurly}{\{}
+\newcommand{\rcurly}{\}}
 \newenvironment{DoxyCompactList}
 {\begin{list}{}{
   \setlength{\leftmargin}{0.5cm}