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1. Java -> Code Style -> Code Formatter -> Show... -> Java Conventions built-in -> Indentation, select Tab policy as "space onlySpaces Only". Enter a new name for this profile and click "OK".
2. Java -> Editor -> Typing, and check "Insert spaces for tab".
3. General -> Editors -> Text Editors -> Insert spaces for tabs
4. Ant -> Editor -> Formatter, and uncheck "Use tab character instead of spaces".
5. If you installed Colorer, Colorer Library Editor -> Uses spaces instead of tabs.
6. If you installed XML Buddy, XMLBuddy -> Formatting -> Uses spaces instead of tabs.
7. If you installed Oxygen, Oxygen -> Editor -> Format -> uncheck Indent with tabs, indent size 2 (beware for existing files with 4 spaces, always a trouble :/)
8. Unfortunaltely neither of the 2 main FreeMarker plugins have similar functionnality yet. But there is a solution :
   • Install AnyEdit plugin (http://andrei.gmxhome.de/eclipse/) and set its parameters in General -> Editors -> AnyEdit Tools. When using AnyEdit plugin, you should set it to
     • Convert tab to space (it's by default in last versions)
     • Add filters (like *.js, *.css) for files you don't want to auto-convert)

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