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"please set the HOME environment variable");
}
#endif
if( file_isdir(zHome)!=1 ){
fossil_fatal("invalid home directory: %s", zHome);
}
#ifndef __MINGW32__
#ifndef _WIN32
if( access(zHome, W_OK) ){
fossil_fatal("home directory %s must be writeable", zHome);
}
#endif
#endif
g.zHome = mprintf("%/", zHome);
#if defined(_WIN32)
/* . filenames give some window systems problems and many apps problems */
zDbName = mprintf("%//_fossil", zHome);
#else
zDbName = mprintf("%s/.fossil", zHome);
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