[Github-comments] [geany/geany] Geany encoding determination broken? (#2910)

[drws]

**Geany version:** 1.37.1

I've enabled `Files > Encodings > Use fixed encoding when opening non-Unicode files` with default non-Unicode encoding set to `None`.

I'm attaching three examples that demonstrate the issue(s) involved. They contain 8-bit (ASCII) values and I am unsuccessfully trying to open these files in Geany.

The first file [iso88591.txt](https://github.com/geany/geany/files/7247441/iso88591.txt) opens as ISO-8859-1 (even though the default is `None` for non-Unicode!). The example file contains:
`C0 61 0A`

The file [breaks.txt](https://github.com/geany/geany/files/7247440/breaks.txt), well, breaks (cannot be opened). It might be detected with a 16-bit encoding which then breaks because of odd number of bytes. Its contents are:
`C0 61 00`

And finally, the file [utf16le.txt](https://github.com/geany/geany/files/7247439/utf16le.txt) opens as UTF-16LE. It contains:
`C0 61 00 0A`

An expected outcome in the first two cases would be that the file opened with no encoding (due to default non-Unicode setting). In the third case, Unicode detection is expected, but there is another issue. When the encoding is set in Geany, the displayed output does not change for me (such as in the case of endline conversion for example). Is Geany really unable to properly open any of the above files?

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https://github.com/geany/geany/issues/2910
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