[newchem-cpp] support C++ files with .cpp suffix
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For context, the historic convention in Grackle project was to use .C as the suffix for C++ source files. Thus, when we began transcribing files, we used the .C suffix (even though it is a less common choice than .cpp) However, it turns out that converting a file named `<prefix>.c` to `<prefix>.C` causes lots of issues performing Git operations when your machine has a case-insensitive file-system (common on macOS). This comes up in operations as simple as changing between 2 branches Consequently, we will be transitioning to the .cpp suffix
mabruzzo
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.cpp suffix
This was referenced Aug 29, 2025
brittonsmith
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Sep 24, 2025
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in New Chemistry and C++ Transcription
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Overview
This lays the ground work for changing the suffix of C++ files from
.Cto.cppThis may seem stupid, but it's annoyingly important
Context and Motivation
For context, the historic convention in Grackle project was to use .C as the suffix for C++ source files. Thus, when we began transcribing files, we used the .C suffix (even though it is a less common choice than
.cpp)However, it turns out that converting a file named
<prefix>.cto<prefix>.Ccauses lots of issues performing Git operations when your machine has a case-insensitive file-system (common on macOS). This comes up in operations as simple as changing between 2 branches (Example: if you haveinitialize_chemistry_data.cin one branch you simply cannot change to a branch withinitialize_chemistry_data.C)Consequently, we will be transitioning to the
.cppsuffix