strings: Add -o option as an alias for -t o

Author: https://github.com/tcl3
Commit: https://github.com/SerenityOS/serenity/commit/c723101728
Pull-request: https://github.com/SerenityOS/serenity/pull/19515

Base/usr/share/man/man1/strings.md

@@ -5,7 +5,7 @@ strings - find printable strings in files
 ## Synopsis
 
 ```**sh
-$ strings [--bytes NUMBER] [--print-file-name] [--radix FORMAT] [PATHS...]  
+$ strings [--bytes NUMBER] [--print-file-name] [-o] [--radix FORMAT] [PATHS...]  
 ```
 
 ## Description
@@ -16,6 +16,7 @@ $ strings [--bytes NUMBER] [--print-file-name] [--radix FORMAT] [PATHS...]
 
 * `-n NUMBER`, `--bytes NUMBER`: Specify the minimum string length (4 is default).
 * `-f`, `--print-file-name`: Print the name of the file before each string.
+* `-o`: Equivalent to specifying `-t o`.
 * `-t FORMAT`, `--radix FORMAT`: Write each string preceded by its byte offset from the start of the file in the specified `FORMAT`, where `FORMAT` matches one of the following: `d` (decimal), `o` (octal), or `x` (hexidecimal).
 
 ## Examples

Userland/Utilities/strings.cpp

@@ -118,6 +118,15 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
             }
             return true;
         } });
+    args_parser.add_option({ Core::ArgsParser::OptionArgumentMode::None,
+        "Equivalent to specifying -t o.",
+        nullptr,
+        'o',
+        nullptr,
+        [&string_offset_format](auto) {
+            string_offset_format = StringOffsetFormat::Octal;
+            return true;
+        } });
     args_parser.set_general_help("Write the sequences of printable characters in files or pipes to stdout.");
     args_parser.add_positional_argument(paths, "File path", "path", Core::ArgsParser::Required::No);
     args_parser.parse(arguments);