[llvm] [llvm-objcopy] Improve help messages (PR #82830)

[Ed Maste via llvm-commits]

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@@ -6,28 +6,25 @@ def B : JoinedOrSeparate<["-"], "B">,
         Alias<binary_architecture>,
         HelpText<"Alias for --binary-architecture">;
 
-defm target : Eq<"target", "Format of the input and output file">,
+defm target : Eq<"target", "Equivalent to --input-target and --output-target for the specified format">,
               Values<"binary">;
 def F : JoinedOrSeparate<["-"], "F">,
         Alias<target>,
         HelpText<"Alias for --target">;
 
-defm input_target : Eq<"input-target", "Format of the input file">,
-                    Values<"binary">;
+defm input_target : Eq<"input-target", "Read the input as the specified format">, MetaVarName<"format">;
 def I : JoinedOrSeparate<["-"], "I">,
         Alias<input_target>,
         HelpText<"Alias for --input-target">;
 
-defm output_target : Eq<"output-target", "Format of the output file">,
-                     Values<"binary">;
+defm output_target : Eq<"output-target", "Write the output as the specified format">, MetaVarName<"format">;
 def O : JoinedOrSeparate<["-"], "O">,
         Alias<output_target>,
         HelpText<"Alias for --output-target">;
 
-defm new_symbol_visibility : Eq<"new-symbol-visibility", "Visibility of "
-                                "symbols generated for binary input or added"
-                                " with --add-symbol unless otherwise"
-                                " specified. The default value is 'default'">;
+defm new_symbol_visibility
+    : Eq<"new-symbol-visibility", "Specirty the visibility of symbols automatically "
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emaste wrote:

Typo: Specirty

https://github.com/llvm/llvm-project/pull/82830