Fossil

      /* File added in the target. */
      if( file_wd_isfile_or_link(zFullPath) ){
        fossil_print("ADD %s - overwrites an unmanaged file\n", zName);
        nOverwrite++;
      }else{
        fossil_print("ADD %s\n", zName);
      }
      undo_save(zName);
      if( !dryRunFlag && !internalUpdate ) undo_save(zName);
      if( !dryRunFlag ) vfile_to_disk(0, idt, 0, 0);
    }else if( idt>0 && idv>0 && ridt!=ridv && (chnged==0 || deleted) ){
      /* The file is unedited.  Change it to the target version */
      undo_save(zName);
      if( deleted ){
        fossil_print("UPDATE %s - change to unmanaged file\n", zName);
      }else{
        fossil_print("UPDATE %s\n", zName);
      }
      if( !dryRunFlag && !internalUpdate ) undo_save(zName);
      if( !dryRunFlag ) vfile_to_disk(0, idt, 0, 0);
    }else if( idt>0 && idv>0 && !deleted && file_wd_size(zFullPath)<0 ){
      /* The file missing from the local check-out. Restore it to the
      ** version that appears in the target. */
      fossil_print("UPDATE %s\n", zName);
      undo_save(zName);
      if( !dryRunFlag && !internalUpdate ) undo_save(zName);
      if( !dryRunFlag ) vfile_to_disk(0, idt, 0, 0);
    }else if( idt==0 && idv>0 ){
      if( ridv==0 ){
        /* Added in current checkout.  Continue to hold the file as
        ** as an addition */
        db_multi_exec("UPDATE vfile SET vid=%d WHERE id=%d", tid, idv);
      }else if( chnged ){
        /* Edited locally but deleted from the target.  Do not track the
        ** file but keep the edited version around. */
        fossil_print("CONFLICT %s - edited locally but deleted by update\n",
                     zName);
        nConflict++;
      }else{
        fossil_print("REMOVE %s\n", zName);
        undo_save(zName);
        if( !dryRunFlag && !internalUpdate ) undo_save(zName);
        if( !dryRunFlag ) file_delete(zFullPath);
      }
    }else if( idt>0 && idv>0 && ridt!=ridv && chnged ){
      /* Merge the changes in the current tree into the target version */
      Blob r, t, v;
      int rc;
      if( nameChng ){
        fossil_print("MERGE %s -> %s\n", zName, zNewName);
      }else{
        fossil_print("MERGE %s\n", zName);
      }
      if( islinkv || islinkt /* || file_wd_islink(zFullPath) */ ){
        fossil_print("***** Cannot merge symlink %s\n", zNewName);
        nConflict++;
      }else{
        unsigned mergeFlags = dryRunFlag ? MERGE_DRYRUN : 0;
        undo_save(zName);
        if( !dryRunFlag && !internalUpdate ) undo_save(zName);
        content_get(ridt, &t);
        content_get(ridv, &v);
        rc = merge_3way(&v, zFullPath, &t, &r, mergeFlags);
        if( rc>=0 ){
          if( !dryRunFlag ){
            blob_write_to_file(&r, zFullNewPath);
            file_wd_setexe(zFullNewPath, isexe);