Deprecate Base.function_name to a nameof method

Author: ararslan

NEWS.md

@@ -964,7 +964,9 @@ Deprecated or removed
 
   * `findin(a, b)` has been deprecated in favor of `findall(occursin(b), a)` ([#24673]).
 
-  * `module_name` has been deprecated in favor of a new, general `nameof` function ([#25622]).
+  * `module_name` has been deprecated in favor of a new, general `nameof` function. Similarly,
+    the unexported `Base.function_name` has been deprecated in favor of a `nameof` method
+    ([#25622]).
 
   * The module `Random.dSFMT` is renamed `Random.DSFMT` ([#25567]).
 

base/deprecated.jl

@@ -1626,6 +1626,7 @@ export readandwrite
 
 # PR #25622
 @deprecate module_name(m::Module) nameof(m)
+@deprecate function_name(f::Function) nameof(f) false
 
 # PR #25196
 @deprecate_binding ObjectIdDict IdDict{Any,Any}

base/reflection.jl

@@ -1017,11 +1017,11 @@ end
 
 # function reflection
 """
-    Base.function_name(f::Function) -> Symbol
+    nameof(f::Function) -> Symbol
 
 Get the name of a generic `Function` as a symbol, or `:anonymous`.
 """
-function_name(f::Function) = typeof(f).name.mt.name
+nameof(f::Function) = typeof(f).name.mt.name
 
 functionloc(m::Core.MethodInstance) = functionloc(m.def)
 

doc/src/base/base.md

@@ -339,7 +339,7 @@ Base.fullname
 Base.names
 Core.nfields
 Base.isconst
-Base.function_name
+Base.nameof(::Function)
 Base.functionloc(::Any, ::Any)
 Base.functionloc(::Method)
 Base.@functionloc

stdlib/REPL/src/LineEdit.jl

@@ -219,7 +219,7 @@ const COMMAND_GROUPS =
 
 const COMMAND_GROUP = Dict(command=>group for (group, commands) in COMMAND_GROUPS for command in commands)
 command_group(command::Symbol) = get(COMMAND_GROUP, command, :nogroup)
-command_group(command::Function) = command_group(Base.function_name(command))
+command_group(command::Function) = command_group(Base.nameof(command))
 
 # return true if command should keep active a region
 function preserve_active(command::Symbol)

test/reflection.jl

@@ -266,7 +266,7 @@ let
     using .TestMod7648
     @test Base.binding_module(@__MODULE__, :a9475) == TestMod7648.TestModSub9475
     @test Base.binding_module(@__MODULE__, :c7648) == TestMod7648
-    @test Base.function_name(foo7648) == :foo7648
+    @test nameof(foo7648) == :foo7648
     @test parentmodule(foo7648, (Any,)) == TestMod7648
     @test parentmodule(foo7648) == TestMod7648
     @test parentmodule(foo7648_nomethods) == TestMod7648