It is the use of English grammar rules to mean C and C++, naturally not everyone was that great on English classes, and specially those that never attended WG21 and WG14 meetings, or work for said companies, and enjoy being pedantic online about it.
To make it easier for those skipping English classes
"A forward dash can be used to state alternatives. A sentence that uses a forward slash in this way can be read to mean that any or all of the stated words could apply."
A library can be written in one or the other. Note most of your "evidence" is job postings, which are generally written by non-technical folks who often mistake Javascript and Java. But no, there is no "C/C++" language or library. There are skills which help you in both. There is code that compiles with both compilers. There is no WG21 for C/C++.
Yes, Visual Studio supports both C and C++, but those are, in fact, two different languages.
You'll struggle to find the links you promised at the end because C and C++ are run by two different groups, meaning you won't be able to link us to single sources.
Of course there is no "C/C++" language, only people that failed at English grammar class, and have yet to update their English parser and semantic analisis.
From Herb Sutter, a name that you might know what relevance it has for WG21, I hope.
"Keynote: Safety, Security, Safety and C / C++ - C++ Evolution"
Context is important in English. Your example is, again, a different context.
A library is one or the other. Talking about safe systems languages where C and C++ share memory safety issues is very different from promoting a library. Thanks for the opportunity to clarify here. You’re confusing context with lack of technical precision.
Nope, I just have better things in life than to be pissed off in Internet when people using English grammar rules accordingly.
We both made it quite clear where we stand, so there is hardly any value pointing out uses of C/C++ expression by other key WG14 and WG21 members, papers or products.
I only jumped in when I saw your inaccurate, condescending post. I'd hate for people to be misled by your confidence in making a pretty simple English mistake. Context always matters in English and precision matters in technical discussions.
"C/C++" has meaning in some contexts and reveals ignorance when used out of context. The post title here uses it incorrectly, but yes, there are ways to use it correctly. We disagree on that because you can't tell the difference in the two. So it is, but the actual explanation of usage is there for others who do care if they are perceived as non-technical in technical environments.
To make it easier for those skipping English classes
"A forward dash can be used to state alternatives. A sentence that uses a forward slash in this way can be read to mean that any or all of the stated words could apply."
https://www.thesaurus.com/e/grammar/slash/
And from the world of reference C and C++.
"The C/C++ Users Journal"
https://en.wikipedia.org/wiki/C/C%2B%2B_Users_Journal
"Visual Studio C/C++ IDE and Compiler for Windows"
https://visualstudio.microsoft.com/vs/features/cplusplus/
Random job post from Microsoft,
"Perform software development in C/C++, Python, and other languages."
https://jobs.careers.microsoft.com/global/en/job/1752991/Pri...
Random job post from Apple,
"Develop/maintain bit-accurate function C/C++ model for hardware verification
Develop/maintain cycle-approximate perf C/C++ model for performance analysis - Analyze model
Excellent C/C++ programming skills"
https://jobs.apple.com/en-us/details/200448639/graphics-mode...
Random job post from Google,
"4 years of experience coding with one or more programming languages (e.g., Java, C/C++, Python)"
https://www.google.com/about/careers/applications/jobs/resul...
Random job post from NVidia,
"Strong C/C++ programming skills"
https://nvidia.wd5.myworkdayjobs.com/en-US/NVIDIAExternalCar...
More examples from WG14, WG21 members, C and C++ compiler vendors can be provided.