patch 8.2.2880: unified diff fails if actually used Commit: https://github.com/vim/vim/commit/ad5c178a191cf2cf37a27c2a789d7afda3879831 Author: glacambre <code@lacamb.re> Date: Mon May 24 14:20:53 2021 +0200 patch 8.2.2880: unified diff fails if actually used Problem: Unified diff fails if actually used. Solution: Invoke :diffupdate in the test. Fix the check for working external diff. (Ghjuvan Lacambre, Christian Brabandt, closes #8197)

/* vi:set ts=8 sts=4 sw=4 noet:
 *
 * VIM - Vi IMproved	by Bram Moolenaar
 *
 * Do ":help uganda"  in Vim to read copying and usage conditions.
 * Do ":help credits" in Vim to see a list of people who contributed.
 */

#ifdef PROTO
// cproto runs into trouble when these types are missing
typedef double _Float16;
typedef double _Float32;
typedef double _Float64;
typedef double _Float128;
typedef double _Float32x;
typedef double _Float64x;
#endif