vim-patch:8.1.0735: cannot handle binary data

Problem:    Cannot handle binary data.
Solution:   Add the Blob type. (Yasuhiro Matsumoto, closes vim/vim#3638)
https://github.com/vim/vim/commit/6e5ea8d2a995b32bbc5972edc4f827b959f2702f

Nvim-specific Blob conversions are implemented in future commits.

Refactor write_blob() to use a FileDescriptor, as f_writefile() was
refactored to use one (does not apply to read_blob()).

Use var_check_lock() in f_add() for Blobs from v8.1.0897.

Add a modeline to test_blob.vim and fix some doc typos.

Include if_perl.txt's VIM::Blob() documentation. Interestingly, this
function already worked before this port, as it just returns a Blob
string literal, not an actual Blob object.

N/A patches for version.c:

vim-patch:8.1.0741: viminfo with Blob is not tested

Problem:    Viminfo with Blob is not tested.
Solution:   Extend the viminfo test.  Fix reading a blob.  Fixed storing a
            special variable value.
https://github.com/vim/vim/commit/8c8b8bb56c724cc1bfc3d8520eec33f2d399697c

vim-patch:8.1.1022: may use NULL pointer when out of memory

Problem:    May use NULL pointer when out of memory. (Coverity)
Solution:   Check for blob_alloc() returning NULL.
https://github.com/vim/vim/commit/e142a9467a7f6845a426d8db6efedf246d3c13ac

1 files changed, 12 insertions, 0 deletions

diff --git a/src/nvim/eval/typval_encode.c.h b/src/nvim/eval/typval_encode.c.h
index 91c948ce7e..cd1be1eecc 100644
--- a/src/nvim/eval/typval_encode.c.h
+++ b/src/nvim/eval/typval_encode.c.h
@@ -83,6 +83,13 @@
 /// @param  len  String length.
 /// @param  type  EXT type.
 
+/// @def TYPVAL_ENCODE_CONV_BLOB
+/// @brief Macros used to convert a blob
+///
+/// @param  tv  Pointer to typval where value is stored. May not be NULL.
+/// @param  blob  Pointer to the blob to convert.
+/// @param  len  Blob length.
+
 /// @def TYPVAL_ENCODE_CONV_FUNC_START
 /// @brief Macros used when starting to convert a funcref or a partial
 ///
@@ -330,6 +337,11 @@ static int _TYPVAL_ENCODE_CONVERT_ONE_VALUE(
       TYPVAL_ENCODE_CONV_FLOAT(tv, tv->vval.v_float);
       break;
     }
+    case VAR_BLOB: {
+      TYPVAL_ENCODE_CONV_BLOB(tv, tv->vval.v_blob,
+                              tv_blob_len(tv->vval.v_blob));
+      break;
+    }
     case VAR_FUNC: {
       TYPVAL_ENCODE_CONV_FUNC_START(tv, tv->vval.v_string);
       TYPVAL_ENCODE_CONV_FUNC_BEFORE_ARGS(tv, 0);