The latest stored topics on this forum regarding handling Unicode file names is >5 old. Has anything regarding handing Unicode file names/content changed? That is, at last check, Intel Fortran will not successfully open a file if the file name character string has Unicode characters. Is there a place (probably not in the Fortran documentation) to read comprehensively about this? The old posts write about having to convert the Unicode name to MultiByle. I need to read/learn about:
1 Detecting whether a file name character string being provided contains Unicode characters. Is that the same as detecting whether it contains multibyte characters?
2. Does the conversion (using one of the MB-functions) from Unicode to MultiByte provide a (mutibyte) character string that the Fortran OPEN routine will successfully process?
OPEN will not accept multibyte strings for filenames - at least at this time. I don't know if Intel has plans to support multibyte characters in the future, but I think they will have to eventually.
As far as I know, the only way to open a file with a Unicode/Multibyte file name or path is to do the call to CreateFileW yourself in a USEROPEN routine, not for the faint-of-heart.
File name has nothing to do with file content.
As for determining if the content of a file is Unicode, start here: https://stackoverflow.com/questions/4672659/whats-the-best-way-to-identify-unicode-encoded-text-files-in-windows
This is more of an O/S issue.
Some file systems have two names for files. For example FAT32 has a Long File Name and a Short File Name. NTFS supports both long and short file names (long name is the Unicode name). On Linux, there may be something similar, perhaps symbolic link can be used.