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On Windows, The user can not specify any Unicode characters not existing in OS native charset in the command line arguments, and args paramters in org.eclipse.core.launcher.Main#main() method receive '?' characters, if the command line arguments contain any non-OS native characters. For example, in English system locale, the user cannot create the data directory with any non-Latin1 characters (such as Hiragana, Katakana, Hungle, Russian, Indian, or CJK characters, so on) This is because java.exe (in most of JDKs/JREs) is not an Unicode application on Win32, and main( ) in java.c in java.exe can receive only the OS native characters, can not receive any other Unicode characters, even if the Eclipse launcher is compiled as Unicode application. So, here is my idea to solve this problem: 1. eclipse.exe encodes all the non-ASCII chars (that is, all the characters bigger than \u007f) in the command line arguments to Unicode escape chars (\uXXXX) 2. org.eclipse.core.launcher.Main#main() decodes the Unicode escape chars to Java String, and set them in args in main() again.
moving to SWT (home or eclipse.exe) for initial comment and to see if - there is another way - this is an issues on all platforms - this approach works on all platforms
Just a question: If the Unicode characters don't exist in the native charset for the operating system, then how are they typed on the command line and how would a C program create a directory that contained one of these characters? Is it true that were the characters to be embedded in a shell script, a native text editor for the platform could not see them properly? Jeff talked about Windows only. The other platforms need to be looked into. Chrix to investigate.
Hiroyuki: without using Eclipse, do you know how to create a folder that contains Hiragana/Katakana characters on a system with english locale? How would you do it (with the windows explorer, dos console?,...)?
On Windows, we can specify the Unicode arguments on: - "Run" dialog (Start -> Run...) - Application Shortcut - also, CreateProcessW or _wexec* can specify the Unicode arguments to invoke eclipse.exe. Especially this is important to implement the RCP application as a generic application, I think. On Unix platforms, I don't think this is not nessesary. because we can specify UTF-8 in LANG environment variable. (eg. en_US.UTF-8)
Sorry. > I don't think this is not nessesary. I don't think this is nessesary.
I think this works already as I created a workspace directory with Thai characters in the name. Used Eclipse version: Mars on Windows 10 (running in German language) I started Eclipse with suggested workspace directory. In Eclipse I siwtched worspace to a new one. For the name of this new one I used Thai characters. Here the name: eclipseะีัะอี This is also working from command line with argument "-data d:\eclipseะีัะอี".
