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dotenv-cli - rewrite() does not resolve symlinks #541

@darmstrong8008

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@darmstrong8008

While having a play around w/ dotenv today, I noticed that if my .env file was symlinked elsewhere, using the CLI utility via dotenv set or dotenv unset would not work as I expected it to, so I made this small change to the rewrite function:

diff --git a/src/dotenv/main.py b/src/dotenv/main.py
index 052de05..3606abe 100644
--- a/src/dotenv/main.py
+++ b/src/dotenv/main.py
@@ -132,8 +132,12 @@ def rewrite(
     path: StrPath,
     encoding: Optional[str],
 ) -> Iterator[Tuple[IO[str], IO[str]]]:
-    pathlib.Path(path).touch()
+    path = pathlib.Path(path)

+    if path.is_symlink():
+        path = path.resolve()
+
+    path.touch()
     with tempfile.NamedTemporaryFile(mode="w", encoding=encoding, delete=False) as dest:
         error = None
         try:

This does what I want, but I'm not sure if there are disadvantages to this. I know symlinks are more widely used on linux, but if I'm not mistaken I think this would work on Windows too, since dotenv works with files and not directories.

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