.tex file is wrong when generating a function whose name includes an underline (Origin: bugzilla #784322)

[doxygen]

status NEW severity normal in component general for ---
Reported in version 1.8.14-GIT on platform Other
Assigned to: Dimitri van Heesch

On 2017-06-29 07:14:46 +0000, eden wrote:

When I define a function like this:

```
/**
  Simple Test Class
 */
@interface Test: NSObject {

/**
 * augument name has an underline
 */
-(int)create_test:(type_test *)client
         argument_underline:(char *)argument_underline;

@end

```
It generates a file called interfaceTest.tex. When I use 'make -C latex', it
stops at

```
! Missing $ inserted.
<inserted text> 
                $
l.28 ...:(char $\ast$)}]{argument\+\_\+underline }
                                                  \end{DoxyParamCaption}}

```

I checked the file interfaceTest.tex, and I found this line:

```
{\footnotesize\ttfamily -\/ (int) create\+\_\+test\+:
\begin{DoxyParamCaption}\item[{(type\+\_\+test $\ast$)}]{client
}\item[{argument_underline:(char $\ast$)}]{argument\+\_\+underline
}\end{DoxyParamCaption}}
```

However, it should be 'argument\+\_\+underline' not 'argument_underline'

On 2018-06-27 14:07:39 +0000, albert wrote:

I've just pushed a proposed patch to github (pull request 779,
https://github.com/doxygen/doxygen/pull/779).

[doxygen]

This issue was previously marked 'fixed but not released',
which means it should be fixed in doxygen version 1.8.15.
Please verify if this is indeed the case. Reopen the
issue if you think it is not fixed and please include any additional information
that you think can be relevant (preferably in the form of a self-contained example).