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if( vid==0 ){
fossil_fatal("nothing is checked out");
}
mid = name_to_rid(g.argv[2]);
if( mid==0 ){
fossil_fatal("not a version: %s", g.argv[2]);
}
if( mid>1 && !db_exists("SELECT 1 FROM plink WHERE cid=%d", mid) ){
fossil_fatal("not a version: %s", g.argv[2]);
}
if( pickFlag || backoutFlag ){
pid = db_int(0, "SELECT pid FROM plink WHERE cid=%d AND isprim", mid);
if( pid<=0 ){
fossil_fatal("cannot find an ancestor for %s", g.argv[2]);
}
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if( vid==0 ){
fossil_fatal("nothing is checked out");
}
mid = name_to_rid(g.argv[2]);
if( mid==0 ){
fossil_fatal("not a version: %s", g.argv[2]);
}
if( !is_a_version(mid) ){
fossil_fatal("not a version: %s", g.argv[2]);
}
if( pickFlag || backoutFlag ){
pid = db_int(0, "SELECT pid FROM plink WHERE cid=%d AND isprim", mid);
if( pid<=0 ){
fossil_fatal("cannot find an ancestor for %s", g.argv[2]);
}
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db_prepare(&q, "SELECT merge FROM vmerge WHERE id=0");
while( db_step(&q)==SQLITE_ROW ){
pivot_set_secondary(db_column_int(&q,0));
}
db_finalize(&q);
pid = pivot_find();
if( pid<=0 ){
fossil_fatal("cannot find a common ancestor between the current"
"checkout and %s", g.argv[2]);
}
}
if( pid>1 && !db_exists("SELECT 1 FROM plink WHERE cid=%d", pid) ){
fossil_fatal("not a version: record #%d", mid);
}
vfile_check_signature(vid, 1);
db_begin_transaction();
undo_begin();
load_vfile_from_rid(mid);
load_vfile_from_rid(pid);
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db_prepare(&q, "SELECT merge FROM vmerge WHERE id=0");
while( db_step(&q)==SQLITE_ROW ){
pivot_set_secondary(db_column_int(&q,0));
}
db_finalize(&q);
pid = pivot_find();
if( pid<=0 ){
fossil_fatal("cannot find a common ancestor between the current "
"checkout and %s", g.argv[2]);
}
}
if( !is_a_version(pid) ){
fossil_fatal("not a version: record #%d", pid);
}
vfile_check_signature(vid, 1);
db_begin_transaction();
undo_begin();
load_vfile_from_rid(mid);
load_vfile_from_rid(pid);
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