Drop compat code for isletter from #542

Author: martinholters

README.md

@@ -91,8 +91,6 @@ Currently, the `@compat` macro supports the following syntaxes:
 * `Compat.split` and `Compat.rsplit` accept `keepempty` keyword argument
   if `splitter` is given as second argument ([#26634])
 
-* `isalpha` is now `isletter` ([#27077]).
-
 * `cfunction` is now `@cfunction` ([#26486]).
 
 * `vecnorm` and `vecdot` are now `Compat.norm` and `Compat.dot`, respectively, while the

src/Compat.jl

@@ -78,12 +78,6 @@ end
     end
 end
 
-# https://github.com/JuliaLang/julia/pull/27077
-@static if VERSION < v"0.7.0-DEV.5087"
-    export isletter
-    const isletter = isalpha
-end
-
 # https://github.com/JuliaLang/julia/pull/26850
 if !isdefined(Base, :isbitstype) # 0.7.0-DEV.4905
     export isbitstype

test/old.jl

@@ -1078,3 +1078,8 @@ end
     yieldto(t)
     fetch(t)
 end
+
+# 0.7.0-DEV.5087
+@test isletter('a')
+@test isletter('β')
+@test !isletter('3')

test/runtests.jl

@@ -82,11 +82,6 @@ end
 
 @test codeunit("foo") == codeunit(SubString("fooαβγ",1,3)) == UInt8
 
-# 0.7.0-DEV.5087
-@test isletter('a')
-@test isletter('β')
-@test !isletter('3')
-
 # 0.7.0-DEV.4905
 @test isbitstype(Int)
 @test !isbitstype(Vector{Int})