vim-patch:7.4.1730

Problem:    It is not easy to get a character out of a string.
Solution:   Add strgetchar() and strcharpart().

58de0e2dcc

src/nvim/eval.lua

@@ -268,9 +268,11 @@ return {
     sqrt={args=1, func="float_op_wrapper", data="&sqrt"},
     str2float={args=1},
     str2nr={args={1, 2}},
+    strcharpart={args={2, 3}},
     strchars={args={1,2}},
     strdisplaywidth={args={1, 2}},
     strftime={args={1, 2}},
+    strgetchar={args={2,2}},
     stridx={args={2, 3}},
     string={args=1},
     strlen={args=1},