How to copydoc documentation of functions with spaces?

[Xeverous]

Describe the bug
On https://www.doxygen.nl/manual/commands.html#cmdcopydoc, it is described that if one wants to copy a documentation of specific overload: "should specify the argument types explicitly (without spaces!)" //! @copydoc MyClass::myfunction(type1,type2)

How am I supposed to @copydoc an overload that takes unsigned long then? Is this not supported?

To Reproduce
In my specific case, I have a code that looks like this:

/**
 * @brief X
 */
struct X
{
	/**
	 * @brief desc
	 * @return true
	 */
	explicit operator bool() const &
	{
		return true;
	}
};

/**
 * @brief Y
 */
struct Y
{
	/**
	 * @copydoc X::operator bool() const &
	 */
	explicit operator bool() const &
	{
		return true;
	}
};

and it generated the following error: warning: @copybrief or @copydoc target 'X::operator' not found. Looks like Doxygen stops on the "operator" word and does not parse further. Is this intended?

Expected behavior
Support for complex overload sets with const and reference qualifiers, including convertion operators.

Version
Doxygen: 1.9.8 (c2fe5c3e4986974eb2a97608b24086683502f07f)
OS:

No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 20.04.6 LTS
Release:	20.04
Codename:	focal

Binary taken from the website.

[albert-github]

• In your description you speak of "unsigned long" but in the example I don't see any "unsigned long"?
• the problem warning: @copybrief or @copydoc target 'X::operator' not found" should be investigated
• what happens with the current doxygen version(1.12.0)?
• Can you please attach a, small, self contained example (source+configuration file in a, compressed, tar or zip file!) that allows us to reproduce the problem? Please don't add external links as they might not be persistent (also references to GitHub repositories are considered non persistent).

[Xeverous]

• unsigned long - this is only a hypothetical question. I haven't tested it but it conflicts with documentation recommendation that overloads should not have spaces.

Will try to reproduce with newer version soon.

[albert-github]

unsigned long - this is only a hypothetical question. I haven't tested it but it conflicts with documentation recommendation that overloads should not have spaces.

As far as I know this is not meant for spaces inside types but for spaces around the type (so after the ( or , and before the ) or ,), could be explained a bit more explicit though.

[Xeverous]

No reproduction, can not launch newest version:

doxygen: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.34' not found (required by doxygen)
doxygen: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.32' not found (required by doxygen)
doxygen: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.33' not found (required by doxygen)
doxygen: /lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.30' not found (required by doxygen)
doxygen: /lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.29' not found (required by doxygen)
doxygen: /lib/x86_64-linux-gnu/libstdc++.so.6: version `CXXABI_1.3.13' not found (required by doxygen)

[albert-github]

The glibc you are using looks like not to be correct looks like similar problem as noted in #10943

[Xeverous]

Yes, this is the same problem. A suddenly high requirement of libc and libcxx.

[Xeverous]

repro.zip

Best I can do is version 1.10, same result: @copybrief or @copydoc target 'X::operator' not found

[albert-github]

@Xeverous

Regarding your version problem (not important for the copydoc problem as I can reproduce this with the given example)

• where did you get the doxygen 1.12.0 version from?
  • github, doxygen.org/download they should work as they are compiled on Ubuntu 20.04 (and gcc 9.4.0, at least on github)
  • Ubuntu repository?
  • somewhere else?

[Xeverous]

I downloaded the binary from Doxygen's website and used its make install script.

[doxygen]

@Xeverous Please verify if the referenced commit fixes the problem for you. Do not close the issue, this will be done automatically when the next official release becomes available.