diff --git a/manifest b/manifest
index 375e1b52c1..9d5dca5c2b 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Fix\stypo\sin\sthe\sMakefile\sfor\sMSVC.
-D 2018-01-03T12:39:35.460
+C Simplify\sthe\s"sqlite3"\scommand\sin\sthe\sTCL\sinterface.\s\sThe\sfilename\sis\snow\noptional.\s\sThere\sis\sa\snew\s--memdb\soption\swith\san\sargument\sthat\sis\sthe\sblob\nto\swhich\sthe\sdatabase\scontent\sshould\sbe\sinitialized.
+D 2018-01-03T13:20:02.897
 F Makefile.in 892bf253c48f3d2d8d4e4e89b44b71aa548a0eba11b148c338690cfb99822859
 F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
 F Makefile.msc 3b7ee2ebaf579fe7d30bece93e61e52782c3ff836455cba3a192f7a8f6f269d6
@@ -450,7 +450,7 @@ F src/mem1.c c12a42539b1ba105e3707d0e628ad70e611040d8f5e38cf942cee30c867083de
 F src/mem2.c f1940d9e91948dd6a908fbb9ce3835c36b5d83c3
 F src/mem3.c 8768ac94694f31ffaf8b4d0ea5dc08af7010a35a
 F src/mem5.c 9bf955937b07f8c32541c8a9991f33ce3173d944
-F src/memdb.c 46109bc6c890c21a802b6aad6e667c81aee53e5623e2068c6fa9ded1b9634558
+F src/memdb.c 13c69aee0185614a25303e2be3802b73416e655e95e1f1c607a9f963b35a1def
 F src/memjournal.c 6f3d36a0a8f72f48f6c3c722f04301ac64f2515435fa42924293e46fc7994661
 F src/msvc.h 4942752b6a253116baaa8de75256c51a459a5e81
 F src/mutex.c b021263554c8a3995e9d53193b8194b96d1ed28e06c3b532dd7f7d29cf0c7d53
@@ -488,7 +488,7 @@ F src/sqliteInt.h 2567341e37050ad542d57f3027b8717cb9b14ff363fdfeecf85421e0d97378
 F src/sqliteLimit.h 1513bfb7b20378aa0041e7022d04acb73525de35b80b252f1b83fedb4de6a76b
 F src/status.c 9737ed017279a9e0c5da748701c3c7bf1e8ae0dae459aad20dd64fcff97a7e35
 F src/table.c b46ad567748f24a326d9de40e5b9659f96ffff34
-F src/tclsqlite.c 45bcce558f40f245e25d1dd7c208f6845137fbee042cced2a4116f05349ffd9d
+F src/tclsqlite.c 907133153d3194ddfd728e84f55fa106de696dc644c9508a054c72b9f833972e
 F src/test1.c 8ef15f7a357f85dfc41c6c748ce9c947b4f676e01bb5ae6a45bee4923dff8b51
 F src/test2.c 3efb99ab7f1fc8d154933e02ae1378bac9637da5
 F src/test3.c b8434949dfb8aff8dfa082c8b592109e77844c2135ed3c492113839b6956255b
@@ -1056,7 +1056,7 @@ F test/malloc_common.tcl aac62499b76be719fac31e7a3e54a7fd53272e7f
 F test/manydb.test 28385ae2087967aa05c38624cec7d96ec74feb3e
 F test/mem5.test c6460fba403c5703141348cd90de1c294188c68f
 F test/memdb.test c1f2a343ad14398d5d6debda6ea33e80d0dafcc7
-F test/memdb1.test 3d8ebffdc64ea1a7b4ccacd5502e61191233d979451747f4af88c9f2ee9b34c5
+F test/memdb1.test 1d94a4bf153201f16a0a755a5a0a5d7f33b001c972e3086acb1f76ad3fb7e0e5
 F test/memleak.test 10b9c6c57e19fc68c32941495e9ba1c50123f6e2
 F test/memsubsys1.test 9e7555a22173b8f1c96c281ce289b338fcba2abe8b157f8798ca195bbf1d347e
 F test/memsubsys2.test 3e4a8d0c05fd3e5fa92017c64666730a520c7e08
@@ -1282,7 +1282,7 @@ F test/tabfunc01.test c47171c36b3d411df2bd49719dcaa5d034f8d277477fd41d253940723b
 F test/table.test b708f3e5fa2542fa51dfab21fc07b36ea445cb2f
 F test/tableapi.test 2674633fa95d80da917571ebdd759a14d9819126
 F test/tableopts.test dba698ba97251017b7c80d738c198d39ab747930
-F test/tclsqlite.test c3d7ac9449634b9f17fd048a3c0212e88a7448be810a9c5bd051acc1ffa00d2f
+F test/tclsqlite.test 45462ee8dd0ca4fd95a476c9253d332ce2cf90985cb0ad5c7eae6e8c7fe24ae8
 F test/tempdb.test bd92eba8f20e16a9136e434e20b280794de3cdb6
 F test/tempdb2.test 27e41ed540b2f9b056c2e77e9bddc1b875358507
 F test/tempfault.test 0c0d349c9a99bf5f374655742577f8712c647900
@@ -1690,7 +1690,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P fb2ac2d2fa6374084f3325b41b257c7a3ace43aade4b666ec4be93b6b70dc39a
-R 025ad5693b1eb347e4b6ac2d4f7892d8
-U mistachkin
-Z 11bcd34cb283c66a6b2991d9a37cef7f
+P e5c6ade8ee596eaffd98d1d7ce9c7c968cd2d45f206603b894026e7ad7ac15b6
+R 66054801a2fc399d3dc7a916643e1819
+U drh
+Z 2a01cfd70faa22757159c69df08c3c76
diff --git a/manifest.uuid b/manifest.uuid
index 624e8aa98f..2905c1c5a6 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-e5c6ade8ee596eaffd98d1d7ce9c7c968cd2d45f206603b894026e7ad7ac15b6
\ No newline at end of file
+47398ae77236a92f6b9345aa397361b6df127a9a2895c0771d506b0be10822b9
\ No newline at end of file
diff --git a/src/memdb.c b/src/memdb.c
index 7392513126..215bfbb24a 100644
--- a/src/memdb.c
+++ b/src/memdb.c
@@ -475,13 +475,22 @@ int sqlite3_memdb_config(
   unsigned int mFlags
 ){
   MemFile *p = memdbFromDbSchema(db, zSchema);
-  if( p==0 ) return SQLITE_ERROR;
-  if( p->eLock!=SQLITE_LOCK_NONE || p->nMmap>0 ) return SQLITE_BUSY;
-  if( p->mFlags & SQLITE_MEMDB_FREEONCLOSE ) sqlite3_free(p->aData);
-  p->aData = aData;
-  p->sz = sz;
-  p->szMax = szMax;
-  p->mFlags = mFlags;
+  int rc;
+  if( p==0 ){
+    rc = SQLITE_ERROR;
+  }else if( p->eLock!=SQLITE_LOCK_NONE || p->nMmap>0 ){
+    rc = SQLITE_BUSY;
+  }else{
+    if( p->mFlags & SQLITE_MEMDB_FREEONCLOSE ) sqlite3_free(p->aData);
+    p->aData = aData;
+    p->sz = sz;
+    p->szMax = szMax;
+    p->mFlags = mFlags;
+    rc = SQLITE_OK;
+  }
+  if( rc!=SQLITE_OK && (mFlags & SQLITE_MEMDB_FREEONCLOSE)!=0 ){
+    sqlite3_free(aData);
+  }
   return SQLITE_OK;
 }
 
diff --git a/src/tclsqlite.c b/src/tclsqlite.c
index 0e86d727b3..d02d94baf5 100644
--- a/src/tclsqlite.c
+++ b/src/tclsqlite.c
@@ -1856,7 +1856,7 @@ static int SQLITE_TCLAPI DbObjCmd(
     "onecolumn",          "preupdate",         "profile",
     "progress",           "rekey",             "restore",
     "rollback_hook",      "status",            "timeout",
-    "total_changes",      "trace",             "trace_v",
+    "total_changes",      "trace",             "trace_v2",
     "transaction",        "unlock_notify",     "update_hook",
     "version",            "wal_hook",          0
   };
@@ -2701,7 +2701,6 @@ static int SQLITE_TCLAPI DbObjCmd(
         xrc = sqlite3_memdb_config(pDb->db, zSchema, pData, len, len,
                   SQLITE_MEMDB_FREEONCLOSE|SQLITE_MEMDB_RESIZEABLE);
         if( xrc ){
-          sqlite3_free(pData);
           Tcl_AppendResult(interp, "unable to set MEMDB content", (char*)0);
           rc = TCL_ERROR;
         }
@@ -3394,6 +3393,24 @@ static int SQLITE_TCLAPI DbObjCmdAdaptor(
 }
 #endif /* SQLITE_TCL_NRE */
 
+/*
+** Issue the usage message when the "sqlite3" command arguments are
+** incorrect.
+*/
+static int sqliteCmdUsage(
+  Tcl_Interp *interp,
+  Tcl_Obj *const*objv
+){
+  Tcl_WrongNumArgs(interp, 1, objv,
+    "HANDLE ?FILENAME? ?-vfs VFSNAME? ?-readonly BOOLEAN? ?-create BOOLEAN?"
+    " ?-nomutex BOOLEAN? ?-fullmutex BOOLEAN? ?-uri BOOLEAN?"
+#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_CODEC_FROM_TCL)
+    " ?-key CODECKEY?"
+#endif
+  );
+  return TCL_ERROR;
+}
+
 /*
 **   sqlite3 DBNAME FILENAME ?-vfs VFSNAME? ?-key KEY? ?-readonly BOOLEAN?
 **                           ?-create BOOLEAN? ?-nomutex BOOLEAN?
@@ -3419,7 +3436,7 @@ static int SQLITE_TCLAPI DbMain(
   const char *zArg;
   char *zErrMsg;
   int i;
-  const char *zFile;
+  const char *zFile = 0;
   const char *zVfs = 0;
   int flags;
   Tcl_DString translatedFilename;
@@ -3428,9 +3445,12 @@ static int SQLITE_TCLAPI DbMain(
   int nKey = 0;
 #endif
   int rc;
+#ifdef SQLITE_ENABLE_MEMDB
+  Tcl_Obj *pDbObj = 0;
+#endif
 
   /* In normal use, each TCL interpreter runs in a single thread.  So
-  ** by default, we can turn of mutexing on SQLite database connections.
+  ** by default, we can turn off mutexing on SQLite database connections.
   ** However, for testing purposes it is useful to have mutexes turned
   ** on.  So, by default, mutexes default off.  But if compiled with
   ** SQLITE_TCL_DEFAULT_FULLMUTEX then mutexes default on.
@@ -3459,18 +3479,26 @@ static int SQLITE_TCLAPI DbMain(
 #endif
       return TCL_OK;
     }
+    if( zArg[0]=='-' ) return sqliteCmdUsage(interp, objv);
   }
-  for(i=3; i+1<objc; i+=2){
+  for(i=2; i<objc; i++){
     zArg = Tcl_GetString(objv[i]);
+    if( zArg[0]!='-' ){
+      if( zFile!=0 ) return sqliteCmdUsage(interp, objv);
+      zFile = zArg;
+      continue;
+    }
+    if( i==objc-1 ) return sqliteCmdUsage(interp, objv);
+    i++;
     if( strcmp(zArg,"-key")==0 ){
 #if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_CODEC_FROM_TCL)
-      pKey = Tcl_GetByteArrayFromObj(objv[i+1], &nKey);
+      pKey = Tcl_GetByteArrayFromObj(objv[i], &nKey);
 #endif
     }else if( strcmp(zArg, "-vfs")==0 ){
-      zVfs = Tcl_GetString(objv[i+1]);
+      zVfs = Tcl_GetString(objv[i]);
     }else if( strcmp(zArg, "-readonly")==0 ){
       int b;
-      if( Tcl_GetBooleanFromObj(interp, objv[i+1], &b) ) return TCL_ERROR;
+      if( Tcl_GetBooleanFromObj(interp, objv[i], &b) ) return TCL_ERROR;
       if( b ){
         flags &= ~(SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE);
         flags |= SQLITE_OPEN_READONLY;
@@ -3480,7 +3508,7 @@ static int SQLITE_TCLAPI DbMain(
       }
     }else if( strcmp(zArg, "-create")==0 ){
       int b;
-      if( Tcl_GetBooleanFromObj(interp, objv[i+1], &b) ) return TCL_ERROR;
+      if( Tcl_GetBooleanFromObj(interp, objv[i], &b) ) return TCL_ERROR;
       if( b && (flags & SQLITE_OPEN_READONLY)==0 ){
         flags |= SQLITE_OPEN_CREATE;
       }else{
@@ -3488,7 +3516,7 @@ static int SQLITE_TCLAPI DbMain(
       }
     }else if( strcmp(zArg, "-nomutex")==0 ){
       int b;
-      if( Tcl_GetBooleanFromObj(interp, objv[i+1], &b) ) return TCL_ERROR;
+      if( Tcl_GetBooleanFromObj(interp, objv[i], &b) ) return TCL_ERROR;
       if( b ){
         flags |= SQLITE_OPEN_NOMUTEX;
         flags &= ~SQLITE_OPEN_FULLMUTEX;
@@ -3497,7 +3525,7 @@ static int SQLITE_TCLAPI DbMain(
       }
     }else if( strcmp(zArg, "-fullmutex")==0 ){
       int b;
-      if( Tcl_GetBooleanFromObj(interp, objv[i+1], &b) ) return TCL_ERROR;
+      if( Tcl_GetBooleanFromObj(interp, objv[i], &b) ) return TCL_ERROR;
       if( b ){
         flags |= SQLITE_OPEN_FULLMUTEX;
         flags &= ~SQLITE_OPEN_NOMUTEX;
@@ -3506,34 +3534,43 @@ static int SQLITE_TCLAPI DbMain(
       }
     }else if( strcmp(zArg, "-uri")==0 ){
       int b;
-      if( Tcl_GetBooleanFromObj(interp, objv[i+1], &b) ) return TCL_ERROR;
+      if( Tcl_GetBooleanFromObj(interp, objv[i], &b) ) return TCL_ERROR;
       if( b ){
         flags |= SQLITE_OPEN_URI;
       }else{
         flags &= ~SQLITE_OPEN_URI;
       }
+#ifdef SQLITE_ENABLE_MEMDB
+    }else if( strcmp(zArg, "-memdb")==0 ){
+      pDbObj = objv[i];
+#endif
     }else{
       Tcl_AppendResult(interp, "unknown option: ", zArg, (char*)0);
       return TCL_ERROR;
     }
   }
-  if( objc<3 || (objc&1)!=1 ){
-    Tcl_WrongNumArgs(interp, 1, objv,
-      "HANDLE FILENAME ?-vfs VFSNAME? ?-readonly BOOLEAN? ?-create BOOLEAN?"
-      " ?-nomutex BOOLEAN? ?-fullmutex BOOLEAN? ?-uri BOOLEAN?"
-#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_CODEC_FROM_TCL)
-      " ?-key CODECKEY?"
-#endif
-    );
-    return TCL_ERROR;
-  }
   zErrMsg = 0;
   p = (SqliteDb*)Tcl_Alloc( sizeof(*p) );
   memset(p, 0, sizeof(*p));
-  zFile = Tcl_GetStringFromObj(objv[2], 0);
-  zFile = Tcl_TranslateFileName(interp, zFile, &translatedFilename);
-  rc = sqlite3_open_v2(zFile, &p->db, flags, zVfs);
-  Tcl_DStringFree(&translatedFilename);
+#ifdef SQLITE_ENABLE_MEMDB
+  if( pDbObj ){
+    rc = sqlite3_open_v2("x", &p->db, flags, "memdb");
+    if( rc==SQLITE_OK ){
+      int len;
+      unsigned char *aData = Tcl_GetByteArrayFromObj(pDbObj, &len);
+      unsigned char *a = sqlite3_malloc64( len );
+      memcpy(a, aData, len);
+      sqlite3_memdb_config(p->db, "main", a, len, sqlite3_msize(a),
+           SQLITE_MEMDB_FREEONCLOSE | SQLITE_MEMDB_RESIZEABLE);
+    }
+  }else
+#endif
+  {
+    if( zFile==0 ) zFile = ":memory:";
+    zFile = Tcl_TranslateFileName(interp, zFile, &translatedFilename);
+    rc = sqlite3_open_v2(zFile, &p->db, flags, zVfs);
+    Tcl_DStringFree(&translatedFilename);
+  }
   if( p->db ){
     if( SQLITE_OK!=sqlite3_errcode(p->db) ){
       zErrMsg = sqlite3_mprintf("%s", sqlite3_errmsg(p->db));
diff --git a/test/memdb1.test b/test/memdb1.test
index 2be9cf62c5..13ef57ace4 100644
--- a/test/memdb1.test
+++ b/test/memdb1.test
@@ -47,8 +47,7 @@ do_test 100 {
 # Verify that the content is the same.
 #
 db close
-sqlite3 db dummy2 -vfs memdb
-db memdb main $db1
+sqlite3 db -memdb $db1
 do_execsql_test 110 {
   SELECT * FROM t1;
 } {1 2}
diff --git a/test/tclsqlite.test b/test/tclsqlite.test
index 1b95a45a5c..ca53710ec2 100644
--- a/test/tclsqlite.test
+++ b/test/tclsqlite.test
@@ -22,19 +22,19 @@ source $testdir/tester.tcl
 
 # Check the error messages generated by tclsqlite
 #
-set r "sqlite_orig HANDLE FILENAME ?-vfs VFSNAME? ?-readonly BOOLEAN? ?-create BOOLEAN? ?-nomutex BOOLEAN? ?-fullmutex BOOLEAN? ?-uri BOOLEAN?"
+set r "sqlite_orig HANDLE ?FILENAME? ?-vfs VFSNAME? ?-readonly BOOLEAN? ?-create BOOLEAN? ?-nomutex BOOLEAN? ?-fullmutex BOOLEAN? ?-uri BOOLEAN?"
 if {[sqlite3 -has-codec]} {
   append r " ?-key CODECKEY?"
 }
 do_test tcl-1.1 {
-  set v [catch {sqlite3 bogus} msg]
+  set v [catch {sqlite3 -bogus} msg]
   regsub {really_sqlite3} $msg {sqlite3} msg
   lappend v $msg
 } [list 1 "wrong # args: should be \"$r\""]
 do_test tcl-1.2 {
   set v [catch {db bogus} msg]
   lappend v $msg
-} {1 {bad option "bogus": must be authorizer, backup, busy, cache, changes, close, collate, collation_needed, commit_hook, complete, copy, enable_load_extension, errorcode, eval, exists, function, incrblob, interrupt, last_insert_rowid, nullvalue, onecolumn, preupdate, profile, progress, rekey, restore, rollback_hook, status, timeout, total_changes, trace, trace_v2, transaction, unlock_notify, update_hook, version, or wal_hook}}
+} {1 {bad option "bogus": must be authorizer, backup, busy, cache, changes, close, collate, collation_needed, commit_hook, complete, copy, enable_load_extension, errorcode, eval, exists, function, incrblob, interrupt, last_insert_rowid, memdb, nullvalue, onecolumn, preupdate, profile, progress, rekey, restore, rollback_hook, status, timeout, total_changes, trace, trace_v2, transaction, unlock_notify, update_hook, version, or wal_hook}}
 do_test tcl-1.2.1 {
   set v [catch {db cache bogus} msg]
   lappend v $msg