Add --version option to Runic.main (#92)

src/Runic.jl

@@ -5,6 +5,10 @@ module Runic
 using JuliaSyntax:
     JuliaSyntax, @K_str, @KSet_str
 
+const RUNIC_VERSION = pkgversion(@__MODULE__)
+# XXX: This should probably be handled by Base.
+Base.include_dependency(joinpath(pkgdir(@__MODULE__), "Project.toml"))
+
 # Debug and assert utilities
 include("debug.jl")
 include("JuliaSyntax.jl")

src/main.jl

@@ -140,11 +140,19 @@ function print_help()
                -o <file>, --output=<file>
                    File to write formatted output to. If no output is given, or if the file
                    is `-`, output is written to stdout.
+
+               --version
+                   Print Runic and julia version information.
         """
     )
     return
 end
 
+function print_version()
+    println(stdout, "runic version $(RUNIC_VERSION), julia version $(VERSION)")
+    return
+end
+
 function maybe_expand_directory!(outfiles, dir)
     if !isdir(dir)
         # Assumed to be a file, checked when using it
@@ -205,6 +213,9 @@ function main(argv)
         elseif x == "--help"
             print_help()
             return errno
+        elseif x == "--version"
+            print_version()
+            return errno
         elseif x == "-q" || x == "--quiet"
             quiet = true
         elseif x == "-v" || x == "--verbose"

test/runtests.jl

@@ -1487,6 +1487,13 @@ end
         @test isempty(fd2)
     end
 
+    # runic --version
+    let (rc, fd1, fd2) = runic(["--version"])
+        @test rc == 0
+        @test occursin("runic version $(Runic.RUNIC_VERSION), julia version $(VERSION)", fd1)
+        @test isempty(fd2)
+    end
+
     # runic <stdin >stdout
     for argv in [
             String[], ["-"],