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Rename the Finch file extension from .fn to .fch

Browse source 
.fn is already used by other tools (e.g. Fennel). Modules are now looked up as name.fch;
a leftover name.fn gets a clear message telling you to rename it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Nexoniarz 2026-10-08 19:27:42 +02:00
commit f897fb3140
92 changed files with 160 additions and 144 deletions
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10
docs/en/for-beginners.md
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@ -92,11 +92,11 @@ fn main() {
}
```
3. Save it in the `Finch` folder as **`hello.fn`**. The `.fn` at the end tells everyone it is a Finch program.
3. Save it in the `Finch` folder as **`hello.fch`**. The `.fch` at the end tells everyone it is a Finch program.
4. In the Terminal, type:
```sh
./build/finch run hello.fn
./build/finch run hello.fch
```
You will see:
@ -652,14 +652,14 @@ fn main() {
```
```
hello.fn:3:11: error: there is no variable named 'agee'
hello.fch:3:11: error: there is no variable named 'agee'
3 | print(agee)
| ^
```
How to read it:
- `hello.fn` is the file,
- `hello.fch` is the file,
- `3` is the **line** number,
- `11` is how far into the line (the **column**),
- then the explanation, and the line itself with a `^` pointing at the problem.
@ -816,7 +816,7 @@ fn main() {
}
```
`return` inside `main` ends the program. (A version with a random number is in `examples/guess.fn`.)
`return` inside `main` ends the program. (A version with a random number is in `examples/guess.fch`.)
</details>
### Project 7: Class average