Update Catch2, and significantly compress it,

also some formatting and a missing header

src/dds.main.cpp

 #include <fmt/ostream.h>
 #include <neo/event.hpp>
 
+#include <clocale>
 #include <filesystem>
 #include <iostream>
 #include <locale>

src/dds/build/builder.cpp

     if (!fs::exists(catch_hpp)) {
         fs::create_directories(catch_hpp.parent_path());
         auto hpp_strm = open(catch_hpp, std::ios::out | std::ios::binary);
-        hpp_strm.write(detail::catch2_embedded_single_header_str,
-                       std::strlen(detail::catch2_embedded_single_header_str));
+        auto c2_str   = detail::catch2_embedded_single_header_str();
+        hpp_strm.write(c2_str.data(), c2_str.size());
         hpp_strm.close();
     }
     ret_lib.include_paths.push_back(test_include_root);

src/dds/build/file_deps.cpp

     }
 }
 
-std::optional<prior_compilation> dds::get_prior_compilation(const database& db, path_ref output_path) {
+std::optional<prior_compilation> dds::get_prior_compilation(const database& db,
+                                                            path_ref        output_path) {
     auto cmd_ = db.command_of(output_path);
     if (!cmd_) {
         return {};

src/dds/build/file_deps.hpp

  */
 struct prior_compilation {
     std::vector<fs::path> newer_inputs;
-    completed_compilation          previous_command;
+    completed_compilation previous_command;
 };
 
 /**

src/dds/catch2_embedded.hpp

 #pragma once
 
+#include <string_view>
+
 namespace dds::detail {
 
-extern const char* const catch2_embedded_single_header_str;
+std::string_view catch2_embedded_single_header_str() noexcept;
 
-}  // namespace dds::detail
+}  // namespace dds::detail

src/dds/cli/dispatch_main.hpp

 
 int dispatch_main(const options&) noexcept;
 
-}  // namespace dds
+}  // namespace dds::cli

src/dds/util/http/pool.cpp

     ret._pool = _impl;
     if (iter == _impl->_clients.end()) {
         // Nothing for this origin yet
-        dds_log(debug, "Opening new connection to {}://{}:{}", origin.protocol, origin.hostname, origin.port);
+        dds_log(debug,
+                "Opening new connection to {}://{}:{}",
+                origin.protocol,
+                origin.hostname,
+                origin.port);
         auto ptr = std::make_shared<detail::http_client_impl>(origin);
         ptr->connect();
         ret._impl = ptr;

src/dds/util/http/response.cpp

     return clen;
 }
 
-std::optional<std::string_view> http_response_info::header_value(std::string_view key) const noexcept {
+std::optional<std::string_view>
+http_response_info::header_value(std::string_view key) const noexcept {
     auto hdr = headers.find(key);
     if (!hdr) {
         return {};

tools/prep-catch2.py

 from pathlib import Path
+import gzip
 
 ROOT = Path(__file__).absolute().parent.parent
 c2_header = ROOT / 'res/catch2.hpp'
 
 buf = c2_header.read_bytes()
+compr = gzip.compress(buf, compresslevel=9)
+chars = ', '.join(f"'\\x{b:02x}'" for b in compr)
 
-chars = ', '.join(f"'\\x{b:02x}'" for b in buf)
 
-c2_embedded = ROOT / 'src/dds/catch2_embeddead_header.cpp'
+def oct_encode_one(b: int) -> str:
+    if b >= 33 and b <= 126:
+        c = chr(b)
+        if c in ('"', '\\'):
+            return '\\' + c
+        return c
+    else:
+        return f'\\{oct(b)[2:]:>03}'
+
+
+def oct_encode(b: bytes) -> str:
+    return ''.join(oct_encode_one(byt) for byt in b)
+
+
+bufs = []
+while compr:
+    head = compr[:2000]
+    compr = compr[len(head):]
+    octl = oct_encode(head)
+    bufs.append(f'"{octl}"_buf')
+
+bufs_arr = ',\n    '.join(bufs)
+
+c2_embedded = ROOT / 'src/dds/catch2_embedded.generated.cpp'
 c2_embedded.write_text(f'''
 #include "./catch2_embedded.hpp"
 
+#include <neo/gzip_io.hpp>
+#include <neo/string_io.hpp>
+
+using namespace neo::literals;
+
 namespace dds::detail {{
 
-static const char bytes[] = {{
-    {chars}, '\\x00'
+static const neo::const_buffer catch2_gzip_bufs[] = {{
+    {bufs_arr}
 }};
-const char* const catch2_embedded_single_header_str = bytes;
 
 }}
-''')
+
+std::string_view dds::detail::catch2_embedded_single_header_str() noexcept {{
+    static const std::string decompressed = [] {{
+        neo::string_dynbuf_io str;
+        neo::gzip_decompress(str, catch2_gzip_bufs);
+        str.shrink_uncommitted();
+        return std::move(str.string());
+    }}();
+    return decompressed;
+}}
+''')