Fix broken test (#1)

Formerly it used a dumb algorithm to determine the end of a sentence.

Author: timholy

src/ModuleDocstrings.jl

@@ -52,12 +52,12 @@ function firstsentence(str::AbstractString)
     for line in split(str, '\n')
         startswith(line, "    ") && continue   # code line
         all(isspace, line) && continue
-        idx = findfirst('.', line)
+        idx = findfirst(r"\.(\s|$)", line)
         if idx === nothing
             print(io, line, ' ')
             continue
         end
-        print(io, line[1:idx])
+        print(io, line[1:first(idx)])
         return String(take!(io))
     end
     return String(take!(io))

test/runtests.jl

@@ -30,5 +30,5 @@ using Test
     end)
     @test occursin("- `Main.anonymous.foo1`: `foo1` is pretty useful.", str)
     @test occursin("- `Main.anonymous.foo2`: `foo2` doesn't show the signature.", str)
-    @test_broken occursin("- `Main.anonymous.foo3`: `foo3` contains a [`Main.anonymous.foo1`](@ref) that contains a period.", str)
+    @test occursin("- `Main.anonymous.foo3`: `foo3` contains a [`Main.anonymous.foo1`](@ref) that contains a period.", str)
 end