Index: src/OFLocale.h
==================================================================
--- src/OFLocale.h
+++ src/OFLocale.h
@@ -181,16 +181,16 @@
  * @note Generally, you want to use @ref OF_LOCALIZED instead, which also takes
  *	 care of the `nil` sentinel automatically.
  *
  * @param ID The ID for the localized string
  * @param fallback The fallback to use in case the localized string cannot be
- *		   looked up or is missing
+ *		   looked up or is missing. This can also be an array and use
+ *		   plural scripting, just like with the JSON language files.
  * @return The localized string
  */
 - (OFString *)localizedStringForID: (OFConstantString *)ID
-			  fallback: (OFConstantString *)fallback, ...
-				    OF_SENTINEL;
+			  fallback: (id)fallback, ... OF_SENTINEL;
 
 /*!
  * @brief Returns the localized string for the specified ID, using the fallback
  *	  string if it cannot be looked up or is missing.
  *
@@ -203,17 +203,18 @@
  * @note Generally, you want to use @ref OF_LOCALIZED instead, which also takes
  *	 care of the `nil` sentinel automatically.
  *
  * @param ID The ID for the localized string
  * @param fallback The fallback to use in case the localized string cannot be
- *		   looked up or is missing
+ *		   looked up or is missing. This can also be an array and use
+ *		   plural scripting, just like with the JSON language files.
  * @param arguments A va_list of arguments, consisting of pairs of variable
  *		    names and values to replace in the localized string,
  *		    terminated with `nil`
  * @return The localized string
  */
 - (OFString *)localizedStringForID: (OFConstantString *)ID
-			  fallback: (OFConstantString *)fallback
+			  fallback: (id)fallback
 			 arguments: (va_list)arguments;
 @end
 
 OF_ASSUME_NONNULL_END

Index: src/OFLocale.m
==================================================================
--- src/OFLocale.m
+++ src/OFLocale.m
@@ -544,11 +544,11 @@
 	objc_autoreleasePoolPop(pool);
 }
 #endif
 
 - (OFString *)localizedStringForID: (OFConstantString *)ID
-			  fallback: (OFConstantString *)fallback, ...
+			  fallback: (id)fallback, ...
 {
 	OFString *ret;
 	va_list args;
 
 	va_start(args, fallback);
@@ -559,11 +559,11 @@
 
 	return ret;
 }
 
 - (OFString *)localizedStringForID: (OFConstantString *)ID
-			  fallback: (OFConstantString *)fallback
+			  fallback: (id)fallback
 			 arguments: (va_list)arguments
 {
 	OFMutableString *ret = [OFMutableString string];
 	void *pool = objc_autoreleasePoolPush();
 	OFMutableDictionary *variables;
@@ -590,12 +590,15 @@
 		UTF8StringLength = [string UTF8StringLength];
 		break;
 	}
 
 	if (UTF8String == NULL) {
-		UTF8String = fallback.UTF8String;
-		UTF8StringLength = fallback.UTF8StringLength;
+		if ([fallback isKindOfClass: [OFArray class]])
+			fallback = evaluateArray(fallback, variables);
+
+		UTF8String = [fallback UTF8String];
+		UTF8StringLength = [fallback UTF8StringLength];
 	}
 
 	state = 0;
 	last = 0;
 	for (size_t i = 0; i < UTF8StringLength; i++) {

Index: utils/ofarc/LHAArchive.m
==================================================================
--- utils/ofarc/LHAArchive.m
+++ utils/ofarc/LHAArchive.m
@@ -119,16 +119,28 @@
 			    @"%04" PRIX16, entry.CRC16];
 
 			[of_stdout writeString: @"\t"];
 			[of_stdout writeLine: OF_LOCALIZED(
 			    @"list_compressed_size",
-			    @"Compressed: %[size] bytes",
+			    [@"["
+			     @"    'Compressed: ',"
+			     @"    ["
+			     @"        {'size == 1': '1 byte'},"
+			     @"        {'': '%[size] bytes'}"
+			     @"    ]"
+			     @"]" JSONValue],
 			    @"size", compressedSize)];
 			[of_stdout writeString: @"\t"];
 			[of_stdout writeLine: OF_LOCALIZED(
 			    @"list_uncompressed_size",
-			    @"Uncompressed: %[size] bytes",
+			    [@"["
+			     @"    'Uncompressed: ',"
+			     @"    ["
+			     @"        {'size == 1': '1 byte'},"
+			     @"        {'': '%[size] bytes'}"
+			     @"    ]"
+			     @"]" JSONValue],
 			    @"size", uncompressedSize)];
 			[of_stdout writeString: @"\t"];
 			[of_stdout writeLine: OF_LOCALIZED(
 			    @"list_compression_method",
 			    @"Compression method: %[method]",

Index: utils/ofarc/TarArchive.m
==================================================================
--- utils/ofarc/TarArchive.m
+++ utils/ofarc/TarArchive.m
@@ -108,11 +108,17 @@
 			OFString *GID = [OFString stringWithFormat:
 			    @"%u", entry.GID];
 
 			[of_stdout writeString: @"\t"];
 			[of_stdout writeLine: OF_LOCALIZED(@"list_size",
-			    @"Size: %[size] bytes",
+			    [@"["
+			     @"    'Size: ',"
+			     @"    ["
+			     @"        {'size == 1': '1 byte'},"
+			     @"        {'': '%[size] bytes'}"
+			     @"    ]"
+			     @"]" JSONValue],
 			    @"size", size)];
 			[of_stdout writeString: @"\t"];
 			[of_stdout writeLine: OF_LOCALIZED(@"list_mode",
 			    @"Mode: %[mode]",
 			    @"mode", mode)];

Index: utils/ofarc/ZIPArchive.m
==================================================================
--- utils/ofarc/ZIPArchive.m
+++ utils/ofarc/ZIPArchive.m
@@ -120,16 +120,28 @@
 			    localDateStringWithFormat: @"%Y-%m-%d %H:%M:%S"];
 
 			[of_stdout writeString: @"\t"];
 			[of_stdout writeLine: OF_LOCALIZED(
 			    @"list_compressed_size",
-			    @"Compressed: %[size] bytes",
+			    [@"["
+			     @"    'Compressed: ',"
+			     @"    ["
+			     @"        {'size == 1': '1 byte'},"
+			     @"        {'': '%[size] bytes'}"
+			     @"    ]"
+			     @"]" JSONValue],
 			    @"size", compressedSize)];
 			[of_stdout writeString: @"\t"];
 			[of_stdout writeLine: OF_LOCALIZED(
 			    @"list_uncompressed_size",
-			    @"Uncompressed: %[size] bytes",
+			    [@"["
+			     @"    'Uncompressed: ',"
+			     @"    ["
+			     @"        {'size == 1': '1 byte'},"
+			     @"        {'': '%[size] bytes'}"
+			     @"    ]"
+			     @"]" JSONValue],
 			    @"size", uncompressedSize)];
 			[of_stdout writeString: @"\t"];
 			[of_stdout writeLine: OF_LOCALIZED(
 			    @"list_compression_method",
 			    @"Compression method: %[method]",

Index: utils/ofhttp/OFHTTP.m
==================================================================
--- utils/ofhttp/OFHTTP.m
+++ utils/ofhttp/OFHTTP.m
@@ -810,11 +810,16 @@
 				    @"num", lengthString);
 			} else {
 				lengthString = [OFString stringWithFormat:
 				    @"%jd", _resumedFrom + _length];
 				lengthString = OF_LOCALIZED(@"size_bytes",
-				    @"%[num] bytes",
+				    [@"["
+				     @"    ["
+				     @"        {'num == 1': '1 byte'},"
+				     @"        {'': '%[num] bytes'}"
+				     @"    ]"
+				     @"]" JSONValue],
 				    @"num", lengthString);
 			}
 		} else
 			lengthString =
 			    OF_LOCALIZED(@"size_unknown", @"unknown");

Index: utils/ofhttp/ProgressBar.m
==================================================================
--- utils/ofhttp/ProgressBar.m
+++ utils/ofhttp/ProgressBar.m
@@ -202,11 +202,16 @@
 		    @"num", num)];
 	} else {
 		OFString *num = [OFString stringWithFormat:
 		    @"%jd", _resumedFrom + _received];
 		[of_stdout writeString: OF_LOCALIZED(@"progress_bytes",
-		    @"%[num] bytes",
+		    [@"["
+		     @"    ["
+		     @"        {'num == 1': '1 byte '},"
+		     @"        {'': '%[num] bytes'}"
+		     @"    ]"
+		     @"]" JSONValue],
 		    @"num", num)];
 	}
 
 	[of_stdout writeString: @" "];
 

Index: utils/ofhttp/lang/de.json
==================================================================
--- utils/ofhttp/lang/de.json
+++ utils/ofhttp/lang/de.json
@@ -95,10 +95,10 @@
         "%[prog]: Kann Datei %[filename] nicht öffnen: %[exception]"
     ],
     "eta_days": "%[num] t ",
     "progress_bytes": [
         [
-            {"num == 1": "1 Byte"},
+            {"num == 1": "1 Byte "},
             {"": "%[num] Bytes"}
         ]
     ]
 }