Merge pull request #17371 from JuliaLang/cb/dbldashparsing

Fix #17366 (cmdline parsing of repeated `--`)

Author: tkelman

base/client.jl

@@ -202,11 +202,7 @@ try_include(path::AbstractString) = isfile(path) && include(path)
 function process_options(opts::JLOptions)
     if !isempty(ARGS)
         idxs = find(x -> x == "--", ARGS)
-        if length(idxs) > 1
-            println(STDERR, "julia: redundant option terminator `--`")
-            exit(1)
-        end
-        deleteat!(ARGS, idxs)
+        length(idxs) > 0 && deleteat!(ARGS, idxs[1])
     end
     repl                  = true
     startup               = (opts.startupfile != 2)

test/cmdlineargs.jl

@@ -213,7 +213,7 @@ let exename = `$(Base.julia_cmd()) --precompiled=yes`
             @test readchomp(`$exename -L $testfile -e 'exit(0)' -- foo -bar --baz`) == "String[\"foo\",\"-bar\",\"--baz\"]"
             @test split(readchomp(`$exename -L $testfile $testfile`), '\n') == ["String[\"$(escape(testfile))\"]", "String[]"]
             @test !success(`$exename --foo $testfile`)
-            @test !success(`$exename -L $testfile -e 'exit(0)' -- foo -bar -- baz`)
+            @test readchomp(`$exename -L $testfile -e 'exit(0)' -- foo -bar -- baz`) == "String[\"foo\",\"-bar\",\"--\",\"baz\"]"
         finally
             rm(testfile)
         end