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README: Explain environment configuration a bit better

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David Macek 2020-06-18 19:14:41 +02:00
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README.md
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@ -13,9 +13,11 @@ Configuration
All three default launchers are the same (except for embedded icons and descriptions) and are configured by corresponding .ini files. The .ini file has to be in the same directory as the .exe file and have the same filename (except for the `.exe` -> `.ini` change). All three default launchers are the same (except for embedded icons and descriptions) and are configured by corresponding .ini files. The .ini file has to be in the same directory as the .exe file and have the same filename (except for the `.exe` -> `.ini` change).
By default, only `MSYSTEM` is set, but options for inheriting `PATH` and tweaking `MSYS` are prepared, as well as `CHERE_INVOKING` for the shell to stay in the current working directory (instead of changing to the home directory). The .ini file contains environment variables, each on a separate line, in the usual `VAR=val` format. Lines starting with `#` are ignored. The values are expanded using the current environment (use Windows `%var%` syntax), evaluated from top to bottom. By default, only `MSYSTEM` is set and the rest is inherited from the outside environment, but some common options are prepared and commented out in the files:
The .ini file contains environment variables, each on a separate line, in the usual `VAR=val` format. Lines starting with `#` are ignored. The values are expanded using the current environment (use Windows `%var%` syntax). - `MSYS=...`: configures runtime behavior
- `CHERE_INVOKING=1`: prevent the login scripts from changing the working directory to the user's home directory
- `MSYS2_PATH_TYPE=strict|minimal|inherit`: configures how the login scripts set up `PATH`
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