Update Coding environment

Coding-environment.md

@@ -62,7 +62,7 @@ The gist of the most significant argument for the upper version is that one read
 ### Scala, now with significant indentation
   * (I think targeting the JVM invalidates this? Or is there now a decent build process to WASM? Is Scala sufficiently more active/bigger community/more mainstream than Nim to make it worth looking into this more?)
 
-### C++ with our own civet-like syntax mangler
+### C++ with our own civet-like syntax unmangler
    -  ⇓⇓ Big con: we would have to implement this!
 
 ### F#
@@ -83,7 +83,8 @@ The gist of the most significant argument for the upper version is that one read
 ### Ada
   - Well-established.
 
-### Rust
-  - ❌ Brackets (disqualifying)
+### Rust with our own civet-like syntax unmangler
+  - ⇓⇓ Big con: we would have to implement this! (but it is probably less work than for C++ since the syntax is much simpler/cleaner; i.e., we could probably actually base it on a proper parser, like civet does, rather than by local string transforms, which is the only way I could think of to do unmangled C++)
+  - If we decide to bite the bullet and implement our own unmangling, is Rust enough better than the far more mature C++ with vast legions of existing packages to make it worth doing this for Rust rather than C++?
   - There's at least one linear algebra library—[nalgebra](https://www.nalgebra.org/)—that's explicitly designed to support WASM builds.
   - Large, active, and growing user community.