well, it works, cleanup needed

Author: wagyourtail

src/main/java/net/fabricmc/loom/configuration/providers/forge/McpConfigProvider.java

@@ -58,14 +58,14 @@ public class McpConfigProvider extends DependencyProvider {
 	private String mappingsPath;
 	private RemapAction remapAction;
 
-	private boolean isSRG = false;
+	private boolean isFG2 = false;
 
 	public McpConfigProvider(Project project) {
 		super(project);
 	}
 
-	public boolean isSRG() {
-		return isSRG;
+	public boolean isFG2() {
+		return isFG2;
 	}
 
 	@Override
@@ -78,7 +78,7 @@ public void provide(DependencyInfo dependency, Consumer<Runnable> postPopulation
 		if (getExtension().getForgeProvider().isFG2()) {
 			official = false;
 			mappingsPath = ZipUtils.contains(mcpZip, "joined.srg") ? "joined.srg" : "config/joined.tsrg";
-			isSRG = mappingsPath.endsWith(".srg");
+			isFG2 = mappingsPath.endsWith(".srg");
 			remapAction = new FG2RemapAction(getProject());
 			if (!Files.exists(mcp) || isRefreshDeps()) {
 				Files.copy(mcpZip, mcp, StandardCopyOption.REPLACE_EXISTING);

src/main/java/net/fabricmc/loom/configuration/providers/forge/MinecraftPatchedProvider.java

@@ -346,15 +346,15 @@ private void produceSrgJar(boolean official, Path clientJar, Path serverJar) thr
 		Path tmpSrg = getToSrgMappings();
 		Set<File> mcLibs = getProject().getConfigurations().getByName(Constants.Configurations.MINECRAFT_DEPENDENCIES).resolve();
 
-		boolean isSrg = getExtension().getMcpConfigProvider().isSRG();
+		boolean isSrg = getExtension().getSrgProvider().isLegacy();
 
 		Path[] clientJarOut = new Path[] { null };
 		Path[] serverJarOut = new Path[] { null };
 
 		ThreadingUtils.run(() -> {
-			clientJarOut[0] = SpecialSourceExecutor.produceSrgJar(getExtension().getMcpConfigProvider().getRemapAction(), getProject(), "client", mcLibs, clientJar, tmpSrg, isSrg, false);
+			clientJarOut[0] = SpecialSourceExecutor.produceSrgJar(getExtension().getMcpConfigProvider().getRemapAction(), getProject(), "client", mcLibs, clientJar, tmpSrg, isSrg, true);
 		}, () -> {
-			serverJarOut[0] = SpecialSourceExecutor.produceSrgJar(getExtension().getMcpConfigProvider().getRemapAction(), getProject(), "server", mcLibs, serverJar, tmpSrg, isSrg, false);
+			serverJarOut[0] = SpecialSourceExecutor.produceSrgJar(getExtension().getMcpConfigProvider().getRemapAction(), getProject(), "server", mcLibs, serverJar, tmpSrg, isSrg, true);
 		});
 
 //		if (isSrg) {
@@ -641,7 +641,7 @@ private void patchJars(File clean, File output, Path patches, String side) throw
 			// Failed to replace logger filter, just ignore
 		}
 
-		if (getExtension().getMcpConfigProvider().isSRG()) {
+		if (getExtension().getMcpConfigProvider().isFG2()) {
 
 			new TaskApplyBinPatches().doTask(getProject(), clean.getAbsoluteFile(), patches.toFile().getAbsoluteFile(), output.getAbsoluteFile(), side);
 
@@ -665,11 +665,11 @@ private void mergeJars(Logger logger) throws Exception {
 		//   This will change if upstream Loom adds the possibility for separate projects/source sets per environment.
 
 
-		if (getExtension().getMcpConfigProvider().isSRG()) {
+		if (getExtension().getMcpConfigProvider().isFG2()) {
 			logger.lifecycle(":merging jars");
 			Path tmpSrg = getToSrgMappings();
 			Set<File> mcLibs = getProject().getConfigurations().getByName(Constants.Configurations.MINECRAFT_DEPENDENCIES).resolve();
-			Files.copy(SpecialSourceExecutor.produceSrgJar(getExtension().getMcpConfigProvider().getRemapAction(), getProject(), "merged", mcLibs, minecraftClientPatchedSrgJar.toPath(), tmpSrg, true, true), minecraftMergedPatchedSrgJar.toPath());
+			Files.copy(SpecialSourceExecutor.produceSrgJar(getExtension().getMcpConfigProvider().getRemapAction(), getProject(), "merged", mcLibs, minecraftClientPatchedSrgJar.toPath(), tmpSrg, getExtension().getSrgProvider().isLegacy(), false), minecraftMergedPatchedSrgJar.toPath());
 		} else {
 			Files.copy(minecraftClientPatchedSrgJar.toPath(), minecraftMergedPatchedSrgJar.toPath());
 		}

src/main/java/net/fabricmc/loom/configuration/providers/mappings/MappingsProviderImpl.java

@@ -343,7 +343,7 @@ private void readAndMergeMCP(Path mcpJar, Consumer<Runnable> postPopulationSched
 		}
 
 		Path srgPath = getRawSrgFile();
-		TinyFile file = new MCPReader(intermediaryTinyPath, srgPath, getExtension().getMcpConfigProvider().isSRG()).read(mcpJar);
+		TinyFile file = new MCPReader(intermediaryTinyPath, srgPath, getExtension().getSrgProvider().isLegacy()).read(mcpJar);
 		TinyV2Writer.write(file, tinyMappings);
 	}
 

src/main/java/net/fabricmc/loom/util/srg/SpecialSourceExecutor.java

@@ -55,10 +55,10 @@ private static String trimLeadingSlash(String string) {
 		return string;
 	}
 
-	public static Path produceSrgJar(RemapAction remapAction, Project project, String side, Set<File> mcLibs, Path officialJar, Path mappings, boolean isSrg, boolean actuallyRemapSrg)
+	public static Path produceSrgJar(RemapAction remapAction, Project project, String side, Set<File> mcLibs, Path officialJar, Path mappings, boolean isLegacy, boolean isFG2)
 			throws Exception {
 		Set<String> filter;
-		if (isSrg) {
+		if (isLegacy) {
 			filter = Files.readAllLines(mappings, StandardCharsets.UTF_8).stream()
 				.filter(s -> s.startsWith("CL:"))
 				.map(s -> s.split(" ")[1] + ".class")
@@ -122,7 +122,7 @@ public static Path produceSrgJar(RemapAction remapAction, Project project, Strin
 
 		Path workingDir = tmpDir();
 
-		if (!isSrg || actuallyRemapSrg) {
+		if (!isFG2) {
 			project.javaexec(spec -> {
 				spec.setArgs(args);
 				spec.setClasspath(remapAction.getClasspath());