Initial Fabric mod for chat-based quiz answer submission

Hooks ServerMessageEvents.ALLOW_CHAT_MESSAGE to intercept chat while the
music_quiz datapack is in answer-accepting state (init=5 on objective
'main'). Intercepted messages are forwarded to mq:answer/submit with the
player's UUID context and the chat broadcast is suppressed so the answer
stays hidden from other players. Outside that state chat passes through
normally.

Target: Minecraft 1.21.6+, Java 21, Fabric Loader 0.16+, Fabric API.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,15 @@
+# Gradle
+.gradle/
+build/
+out/
+*.iml
+.idea/
+
+# Loom
+.fabric/
+run/
+remappedSrc/
+
+# OS
+.DS_Store
+Thumbs.db

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 tkrmagid
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -0,0 +1,49 @@
+# chat_answer (채팅정답)
+
+음악퀴즈(`mq`) 데이터팩의 짝이 되는 **서버사이드** 모드.
+
+정답 입력을 받는 상태(`scoreboard players get init main == 5`) 동안 플레이어가
+채팅을 입력하면 메시지를 가로채서 다음을 실행한다:
+
+```
+execute as <플레이어 UUID> run function mq:answer/submit {text:'<채팅 내용>'}
+```
+
+채팅은 다른 플레이어에게 broadcast 되지 않으므로 정답이 화면에 노출되지 않는다.
+`init` 점수가 5 가 아닐 때는 채팅이 평소처럼 모두에게 보인다.
+
+## 빌드
+
+JDK 21 필요. Linux/macOS:
+
+```
+./gradlew build
+```
+
+Windows:
+
+```
+gradlew.bat build
+```
+
+산출물: `build/libs/chat_answer-<version>.jar`
+
+## 설치
+
+서버의 `mods/` 폴더에 jar 를 넣는다. Fabric Loader 0.16+ 필요. Fabric API 도 함께 설치.
+
+## 호환성
+
+- 빌드 대상: Minecraft 1.21.6 (Dialog 시스템 최초 버전).
+- 코드가 사용하는 API (`ServerMessageEvents.ALLOW_CHAT_MESSAGE`, `Scoreboard`, `MinecraftServer.getCommandManager`) 는 1.21.x 전반에 걸쳐 인터미디어리 매핑이 안정적이므로 동일 jar 가 그 이상 버전에서도 일반적으로 작동.
+- Mojang 이 chat / scoreboard / command 시스템을 깨는 변경을 적용하면 그 시점에 재빌드 필요.
+
+### Forge / NeoForge 사용자
+
+현재 jar 는 Fabric 전용. NeoForge 서버에서 사용하려면 [Sinytra Connector](https://modrinth.com/mod/connector) 를 함께 설치하면 그대로 작동.
+
+(별도 NeoForge 네이티브 variant 빌드는 향후 추가 예정.)
+
+## 라이센스
+
+MIT

build.gradle

@@ -0,0 +1,45 @@
+plugins {
+    id 'fabric-loom' version '1.10-SNAPSHOT'
+    id 'java'
+}
+
+group = project.mod_group
+version = project.mod_version
+archivesBaseName = project.mod_id
+
+java {
+    toolchain.languageVersion = JavaLanguageVersion.of(21)
+    withSourcesJar()
+}
+
+repositories {
+    maven { url = 'https://maven.fabricmc.net/' }
+    mavenCentral()
+}
+
+dependencies {
+    minecraft "com.mojang:minecraft:${project.minecraft_version}"
+    mappings "net.fabricmc:yarn:${project.yarn_mappings}:v2"
+    modImplementation "net.fabricmc:fabric-loader:${project.loader_version}"
+    modImplementation "net.fabricmc.fabric-api:fabric-api:${project.fabric_version}"
+}
+
+processResources {
+    inputs.property "version", project.version
+    inputs.property "mod_id", project.mod_id
+
+    filesMatching("fabric.mod.json") {
+        expand "version": project.version, "mod_id": project.mod_id
+    }
+}
+
+tasks.withType(JavaCompile).configureEach {
+    options.release = 21
+    options.encoding = 'UTF-8'
+}
+
+jar {
+    from("LICENSE") {
+        rename { "${it}_${project.archivesBaseName}" }
+    }
+}

gradle.properties

@@ -0,0 +1,16 @@
+org.gradle.jvmargs=-Xmx2G
+org.gradle.parallel=true
+
+# Minecraft / Fabric versions
+# Targets MC 1.21.6 (oldest Minecraft version with the dialog system).
+# Chat events are stable since 1.19 — the same jar typically works across
+# the 1.21.x line; rebuild against newer mappings if a future version
+# breaks binary compatibility.
+minecraft_version=1.21.6
+yarn_mappings=1.21.6+build.1
+loader_version=0.16.10
+fabric_version=0.128.2+1.21.6
+
+mod_id=chat_answer
+mod_version=1.0.0
+mod_group=kr.tkrmagid.chatanswer

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.12-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,251 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,94 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle

@@ -0,0 +1,9 @@
+pluginManagement {
+    repositories {
+        maven { url = 'https://maven.fabricmc.net/' }
+        gradlePluginPortal()
+        mavenCentral()
+    }
+}
+
+rootProject.name = 'chat_answer'

src/main/java/kr/tkrmagid/chatanswer/ChatAnswerMod.java

@@ -0,0 +1,103 @@
+package kr.tkrmagid.chatanswer;
+
+import net.fabricmc.api.ModInitializer;
+import net.fabricmc.fabric.api.message.v1.ServerMessageEvents;
+import net.minecraft.scoreboard.Scoreboard;
+import net.minecraft.scoreboard.ScoreboardObjective;
+import net.minecraft.scoreboard.ScoreHolder;
+import net.minecraft.scoreboard.ReadableScoreboardScore;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.command.ServerCommandSource;
+import net.minecraft.server.network.ServerPlayerEntity;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * 채팅정답 (chat_answer) — 음악퀴즈 데이터팩과 짝이 되는 서버사이드 모드.
+ *
+ * 정답 입력 상태(init=5) 일 때 플레이어 채팅을 가로채서
+ *   function mq:answer/submit {text:'<채팅 내용>'}
+ * 을 해당 플레이어 컨텍스트로 실행한다. 채팅은 다른 플레이어들에게 broadcast 되지
+ * 않도록 차단한다 (정답이 노출되면 안되므로). 그 외 상태에서는 채팅이 정상 진행된다.
+ */
+public class ChatAnswerMod implements ModInitializer {
+    public static final String MOD_ID = "chat_answer";
+    private static final Logger LOG = LoggerFactory.getLogger(MOD_ID);
+
+    // 음악퀴즈 데이터팩 약속 — main objective 의 init 점수가 5 면 정답 입력 받는 상태.
+    private static final String SCOREBOARD_OBJECTIVE = "main";
+    private static final String SCOREBOARD_HOLDER = "init";
+    private static final int ACCEPTING_ANSWER_STATE = 5;
+
+    @Override
+    public void onInitialize() {
+        // 1) 가로채기 단계 — 정답 입력 상태면 false 반환해서 broadcast 차단
+        ServerMessageEvents.ALLOW_CHAT_MESSAGE.register((message, sender, params) -> {
+            if (!isAcceptingAnswer(sender.getServer())) {
+                return true; // 평소엔 채팅 그대로
+            }
+            submitAnswer(sender, message.getContent().getString());
+            return false; // 정답 입력 상태에서는 채팅을 죽임
+        });
+        LOG.info("[{}] initialized — chat-as-answer hook active", MOD_ID);
+    }
+
+    /**
+     * mq:main 데이터팩의 scoreboard main / init 점수를 읽어서 현재 상태 판정.
+     * objective 가 아직 생성되지 않았으면(퀴즈 미시작) 항상 false.
+     */
+    private static boolean isAcceptingAnswer(MinecraftServer server) {
+        Scoreboard scoreboard = server.getScoreboard();
+        ScoreboardObjective objective = scoreboard.getNullableObjective(SCOREBOARD_OBJECTIVE);
+        if (objective == null) {
+            return false;
+        }
+        ReadableScoreboardScore score = scoreboard.getScore(ScoreHolder.fromName(SCOREBOARD_HOLDER), objective);
+        if (score == null) {
+            return false;
+        }
+        return score.getScore() == ACCEPTING_ANSWER_STATE;
+    }
+
+    /**
+     * 채팅 내용을 데이터팩 함수 호출로 변환. NBT 단일 따옴표 문자열로 감싸고,
+     * 매크로 치환 단계에서 문제 일으킬 수 있는 문자들을 사전 정리한다.
+     */
+    private static void submitAnswer(ServerPlayerEntity sender, String rawText) {
+        String safe = sanitize(rawText);
+        if (safe.isEmpty()) {
+            return;
+        }
+        // single-quoted NBT 안의 ' 과 \ 만 이스케이프
+        String nbt = safe.replace("\\", "\\\\").replace("'", "\\'");
+        String command = "execute as " + sender.getUuidAsString()
+                + " run function mq:answer/submit {text:'" + nbt + "'}";
+
+        MinecraftServer server = sender.getServer();
+        // 서버 커맨드 소스 (OP level 4) + silent — 채팅창에 명령어 출력 방지
+        ServerCommandSource source = server.getCommandSource().withSilent();
+        try {
+            server.getCommandManager().executeWithPrefix(source, command);
+        } catch (Exception e) {
+            LOG.error("[{}] failed to submit answer for {}: {}", MOD_ID, sender.getName().getString(), e.toString());
+        }
+    }
+
+    /**
+     * 매크로 라인 ($data ... set value "$(text)") 가 큰따옴표로 값을 감싸기 때문에,
+     * 채팅 내용에 큰따옴표나 백슬래시가 있으면 그 매크로가 깨진다.
+     * 가장 안전한 처리는 두 문자를 제거. 일반 정답 텍스트에는 거의 등장하지 않음.
+     * 추가로 NBT 호환을 위해 제어문자(\u0000-\u001f, \u007f) 도 제거.
+     */
+    private static String sanitize(String text) {
+        if (text == null) return "";
+        StringBuilder sb = new StringBuilder(text.length());
+        for (int i = 0; i < text.length(); i++) {
+            char c = text.charAt(i);
+            if (c == '"' || c == '\\') continue;
+            if (c < 0x20 || c == 0x7f) continue;
+            sb.append(c);
+        }
+        return sb.toString().strip();
+    }
+}

src/main/resources/fabric.mod.json

@@ -0,0 +1,22 @@
+{
+  "schemaVersion": 1,
+  "id": "${mod_id}",
+  "version": "${version}",
+  "name": "채팅정답",
+  "description": "음악퀴즈(mq) 데이터팩이 정답 입력을 받는 상태(init=5)에서 채팅을 가로채 mq:answer/submit 함수로 전달합니다.",
+  "authors": [ "tkrmagid" ],
+  "contact": {
+    "homepage": "https://git.tkrmagid.kr/tkrmagid/mc_chat_answer_mod"
+  },
+  "license": "MIT",
+  "environment": "server",
+  "entrypoints": {
+    "main": [ "kr.tkrmagid.chatanswer.ChatAnswerMod" ]
+  },
+  "depends": {
+    "fabricloader": ">=0.16.0",
+    "minecraft": ">=1.21.6",
+    "java": ">=21",
+    "fabric-api": "*"
+  }
+}