Add /.args feature to Redbean/Lua/SQLite/Python/QuickJS

You now have some ability to truly make an executable yours, by adding a
`.args` file to the root of the zip structure. If this is specified,
then you'll be overriding the default CLI args.

This will be a great feature for folks who want to distribute their own
apps, using the interpreter executable, but have the executable appears
to be just your app rather than being the interpreter.

tool/net/help.txt

@@ -452,6 +452,41 @@ SPECIAL PATHS
           If you enable HTTPS client verification then redbean will check
           that HTTPS clients (a) have a certificate and (b) it was signed.
 
+  /.args
+          Specifies default command-line arguments.
+
+          There's one argument per line. Trailing newline is ignored. If
+          the special argument `...` is *not* encountered, then the
+          replacement will only happen if *no* CLI args are specified.
+          If the special argument `...` *is* encountered, then it'll be
+          replaced with whatever CLI args were specified by the user.
+
+          For example, you might want to use redbean.com in interpreter
+          mode, where your script file is inside the zip. Then, if your
+          redbean is run, what you want is to have the default behavior
+          be running your script. In that case, you might:
+
+              $ cat <<'EOF' >.args
+              -i
+              /zip/hello.lua
+              EOF
+
+              $ cat <<'EOF' >hello.lua
+              print("hello world")
+              EOF
+
+              $ zip redbean.com .args hello.lua
+              $ ./redbean.com
+              hello world
+
+          Please note that if you ran:
+
+              $ ./redbean.com -vv
+
+          Then the default mode of redbean will kick back in. To prevent
+          that from happening, simply add the magic arg `...` to the end
+          of your `.args` file.
+
 ────────────────────────────────────────────────────────────────────────────────
 
 HOOKS

tool/net/net.mk

@@ -66,6 +66,7 @@ TOOL_NET_DIRECTDEPS =								\
 	THIRD_PARTY_REGEX							\
 	THIRD_PARTY_SQLITE3							\
 	THIRD_PARTY_ZLIB							\
+	TOOL_ARGS								\
 	TOOL_BUILD_LIB								\
 	TOOL_DECODE_LIB
 

tool/net/redbean.c

@@ -146,6 +146,7 @@
 #include "third_party/mbedtls/x509_crt.h"
 #include "third_party/regex/regex.h"
 #include "third_party/zlib/zlib.h"
+#include "tool/args/args.h"
 #include "tool/build/lib/case.h"
 #include "tool/build/lib/psk.h"
 #include "tool/net/lfuncs.h"
@@ -3745,8 +3746,7 @@ static int LuaFetch(lua_State *L) {
           // skip them to avoid duplicates;
           // also allow unknown headers
           if ((hdridx = GetHttpHeader(key, keylen)) == -1 ||
-              hdridx != kHttpContentLength &&
-              hdridx != kHttpConnection) {
+              hdridx != kHttpContentLength && hdridx != kHttpConnection) {
             if (hdridx == kHttpUserAgent) {
               agenthdr = hdr;
             } else if (hdridx == kHttpHost) {
@@ -7036,6 +7036,7 @@ void RedBean(int argc, char *argv[]) {
 }
 
 int main(int argc, char *argv[]) {
+  LoadZipArgs(&argc, &argv);
   if (!IsTiny()) {
     ShowCrashReports();
   }