Updates to the command-line shell. Simplify the banner message. Add the

".save" command as an alias for ".backup".  When starting with no arguments,
include a banner message warning that the database is transient and in-memory
and mention the ".open" command.

FossilOrigin-Name: f5ad1e1bf2828c5da70c1ff944d8212036142e6f

manifest

@@ -1,5 +1,5 @@
-C Fixes\sto\sthe\s"editline"\ssupport\sin\sthe\scommand-line\sshell.
+C Updates\sto\sthe\scommand-line\sshell.\s\sSimplify\sthe\sbanner\smessage.\s\sAdd\sthe\n".save"\scommand\sas\san\salias\sfor\s".backup".\s\sWhen\sstarting\swith\sno\sarguments,\ninclude\sa\sbanner\smessage\swarning\sthat\sthe\sdatabase\sis\stransient\sand\sin-memory\nand\smention\sthe\s".open"\scommand.
-D 2014-02-11T14:37:51.706
+D 2014-02-11T16:22:18.453
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in 2ef13430cd359f7b361bb863504e227b25cc7f81
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -220,7 +220,7 @@ F src/random.c d10c1f85b6709ca97278428fd5db5bbb9c74eece
 F src/resolve.c 7eda9097b29fcf3d2b42fdc17d1de672134e09b6
 F src/rowset.c 64655f1a627c9c212d9ab497899e7424a34222e0
 F src/select.c 50961f0d0ab8f2d45ff29ec5f91d8db221330ca7
-F src/shell.c b1f75cfcd05b7921d74361f1cb9c01b9ca0b13df
+F src/shell.c 3dd86bf73ccd079f0e32ef5069600586085e8239
 F src/sqlite.h.in eed7f7d66a60daaa7b4a597dcd9bad87aad9611b
 F src/sqlite3.rc 11094cc6a157a028b301a9f06b3d03089ea37c3e
 F src/sqlite3ext.h 886f5a34de171002ad46fae8c36a7d8051c190fc
@@ -803,7 +803,7 @@ F test/shared9.test 5f2a8f79b4d6c7d107a01ffa1ed05ae7e6333e21
 F test/sharedA.test 0cdf1a76dfa00e6beee66af5b534b1e8df2720f5
 F test/shared_err.test 0079c05c97d88cfa03989b7c20a8b266983087aa
 F test/sharedlock.test 5ede3c37439067c43b0198f580fd374ebf15d304
-F test/shell1.test e7c0b9ebda25d5e78f0a3ea0dc4e31bb6d8098c0
+F test/shell1.test f2a1d471e5cd2b42f7a65b166dc1ace2b8d11583
 F test/shell2.test c57da3a381c099b02c813ba156298d5c2f5c93a3
 F test/shell3.test 5e8545ec72c4413a0e8d4c6be56496e3c257ca29
 F test/shell4.test aa4eef8118b412d1a01477a53426ece169ea86a9
@@ -1153,7 +1153,7 @@ F tool/vdbe-compress.tcl 0cf56e9263a152b84da86e75a5c0cdcdb7a47891
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh d1a6de74685f360ab718efda6265994b99bbea01
 F tool/win/sqlite.vsix 030f3eeaf2cb811a3692ab9c14d021a75ce41fff
-P c950d6c4117d076f871518e738cdf9e8c46a19fc
+P 7989ce5f105657060a39be295255da8eff9ed56e fe284afe739c497e153ac2bc0275f7c9e862c824
-R c9ba63de227fe5f3c297f7ef3cdd12e1
+R 6488d4d20aaa0785dbe5d9952b0b36b8
 U drh
-Z ef37a62508215b02b96d545bd9d80c32
+Z d484b7c22506286af852445c160c123b

manifest.uuid

@@ -1 +1 @@
-7989ce5f105657060a39be295255da8eff9ed56e
+f5ad1e1bf2828c5da70c1ff944d8212036142e6f

src/shell.c

@@ -1586,6 +1586,7 @@ static char zHelp[] =
   ".quit                  Exit this program\n"
   ".read FILENAME         Execute SQL in FILENAME\n"
   ".restore ?DB? FILE     Restore content of DB (default \"main\") from FILE\n"
+  ".save FILE             Write in-memory database into FILE\n"
   ".schema ?TABLE?        Show the CREATE statements\n"
   "                         If TABLE specified, only show tables matching\n"
   "                         LIKE pattern TABLE.\n"
@@ -2155,7 +2156,9 @@ static int do_meta_command(char *zLine, struct callback_data *p){
   if( nArg==0 ) return 0; /* no tokens, no error */
   n = strlen30(azArg[0]);
   c = azArg[0][0];
-  if( c=='b' && n>=3 && strncmp(azArg[0], "backup", n)==0 ){
+  if( (c=='b' && n>=3 && strncmp(azArg[0], "backup", n)==0)
+   || (c=='s' && n>=3 && strncmp(azArg[0], "save", n)==0)
+  ){
     const char *zDestFile = 0;
     const char *zDb = 0;
     sqlite3 *pDest;
@@ -3503,6 +3506,26 @@ static void main_init(struct callback_data *data) {
   sqlite3_config(SQLITE_CONFIG_SINGLETHREAD);
 }
 
+/*
+** Output text to the console in a font that attracts extra attention.
+*/
+#ifdef _WIN32
+static void printBold(const char *zText){
+  HANDLE out = GetStdHandle(STD_OUTPUT_HANDLE);
+  CONSOLE_SCREEN_BUFFER_INFO defaultScreenInfo;
+  GetConsoleScreenBufferInfo(out, &defaultScreenInfo);
+  SetConsoleTextAttribute(out,
+         FOREGROUND_RED|FOREGROUND_INTENSITY
+  );
+  printf("%s", zText);
+  SetConsoleTextAttribute(out, defaultScreenInfo.wAttributes);
+}
+#else
+static void printBold(const char *zText){
+  printf("\033[1m%s\033[0m", zText);
+}
+#endif
+
 /*
 ** Get the argument to an --option.  Throw an error and die if no argument
 ** is available.
@@ -3523,6 +3546,7 @@ int main(int argc, char **argv){
   char *zFirstCmd = 0;
   int i;
   int rc = 0;
+  int warnInmemoryDb = 0;
 
   if( strcmp(sqlite3_sourceid(),SQLITE_SOURCE_ID)!=0 ){
     fprintf(stderr, "SQLite header and source version mismatch\n%s\n%s\n",
@@ -3617,6 +3641,7 @@ int main(int argc, char **argv){
   if( data.zDbFilename==0 ){
 #ifndef SQLITE_OMIT_MEMORYDB
     data.zDbFilename = ":memory:";
+    warnInmemoryDb = argc==1;
 #else
     fprintf(stderr,"%s: Error: no database filename specified\n", Argv0);
     return 1;
@@ -3753,10 +3778,15 @@ int main(int argc, char **argv){
       int nHistory;
       printf(
         "SQLite version %s %.19s\n" /*extra-version-info*/
-        "Enter \".help\" for instructions\n"
+        "Enter \".help\" for usage hints.\n",
-        "Enter SQL statements terminated with a \";\"\n",
         sqlite3_libversion(), sqlite3_sourceid()
       );
+      if( warnInmemoryDb ){
+        printf("Connected to a ");
+        printBold("transient in-memory database.");
+        printf("\nUse \".open FILENAME\" to reopen on a "
+               "persistent database.\n");
+      }
       zHome = find_home_dir();
       if( zHome ){
         nHistory = strlen30(zHome) + 20;

test/shell1.test

@@ -105,7 +105,7 @@ do_test shell1-1.7.1 {
   set rc [lindex $res 0]
   list $rc \
        [regexp {SQLite version} $res] \
-       [regexp {Enter SQL statements} $res]
+       [regexp {Enter ".help" for usage hints} $res]
 } {0 1 1}
 
 # -batch               force batch I/O