Merge pull request #9362 from bfredl/macnumlocale

os/lang: use the correct LC_NUMERIC also for OS X

src/nvim/os/lang.c

@@ -54,6 +54,11 @@ void lang_init(void)
     CFRelease(cf_lang_region);
 # ifdef HAVE_LOCALE_H
     setlocale(LC_ALL, "");
+
+#  ifdef LC_NUMERIC
+    // Make sure strtod() uses a decimal point, not a comma.
+    setlocale(LC_NUMERIC, "C");
+#  endif
 # endif
   }
 #endif

test/functional/viml/lang_spec.lua

@@ -18,4 +18,13 @@ describe('viml', function()
     ]])
     eq(nil, string.find(eval('v:errmsg'), '^E129'))
   end)
+
+  it('str2float is not affected by locale', function()
+    if exc_exec('lang ctype sv_SE.UTF-8') ~= 0 then
+      pending("Locale sv_SE.UTF-8 not supported")
+      return
+    end
+    clear{env={LANG="", LC_NUMERIC="sv_SE.UTF-8"}}
+    eq(2.2, eval('str2float("2.2")'))
+  end)
 end)