complete symbols only in backslash forms -- less intrusive editing, greater chance of finding escape sequence in text;
complete words >= 3 characters only;
discontinued short word abbrev "Un" (see also fdd6e68e29d9 and e38e80686ce5);
syntax: glob
*~
*.class
*.jar
*.orig
*.rej
.DS_Store
syntax: regexp
^contrib
^heaps/
^browser_info/
^doc/.*\.dvi
^doc/.*\.eps
^doc/.*\.pdf
^doc/.*\.ps
^src/Tools/jEdit/dist/