Update runtime files.
diff --git a/runtime/syntax/git.vim b/runtime/syntax/git.vim
index 48264c7..a8467ed 100644
--- a/runtime/syntax/git.vim
+++ b/runtime/syntax/git.vim
@@ -1,7 +1,7 @@
" Vim syntax file
" Language: generic git output
" Maintainer: Tim Pope <vimNOSPAM@tpope.org>
-" Last Change: 2010 May 21
+" Last Change: 2019 Dec 05
if exists("b:current_syntax")
finish
@@ -13,7 +13,7 @@
syn include @gitDiff syntax/diff.vim
syn region gitHead start=/\%^/ end=/^$/
-syn region gitHead start=/\%(^commit \x\{40\}\%(\s*(.*)\)\=$\)\@=/ end=/^$/
+syn region gitHead start=/\%(^commit\%( \x\{40\}\)\{1,\}\%(\s*(.*)\)\=$\)\@=/ end=/^$/
" For git reflog and git show ...^{tree}, avoid sync issues
syn match gitHead /^\d\{6\} \%(\w\{4} \)\=\x\{40\}\%( [0-3]\)\=\t.*/
@@ -25,12 +25,14 @@
syn region gitDiffMerge start=/^\%(diff --\%(cc\|combined\) \)\@=/ end=/^\%(diff --\|$\)\@=/ contains=@gitDiff
syn region gitDiffMerge start=/^\%(@@@@* -\)\@=/ end=/^\%(diff --\|$\)\@=/ contains=@gitDiff
syn match gitDiffAdded "^ \++.*" contained containedin=gitDiffMerge
+syn match gitDiffAdded "{+.*+}" contained containedin=gitDiff
syn match gitDiffRemoved "^ \+-.*" contained containedin=gitDiffMerge
+syn match gitDiffRemoved "\[-.*-\]" contained containedin=gitDiff
syn match gitKeyword /^\%(object\|type\|tag\|commit\|tree\|parent\|encoding\)\>/ contained containedin=gitHead nextgroup=gitHash,gitType skipwhite
syn match gitKeyword /^\%(tag\>\|ref:\)/ contained containedin=gitHead nextgroup=gitReference skipwhite
syn match gitKeyword /^Merge:/ contained containedin=gitHead nextgroup=gitHashAbbrev skipwhite
-syn match gitMode /^\d\{6\}/ contained containedin=gitHead nextgroup=gitType,gitHash skipwhite
+syn match gitMode /^\d\{6\}\>/ contained containedin=gitHead nextgroup=gitType,gitHash skipwhite
syn match gitIdentityKeyword /^\%(author\|committer\|tagger\)\>/ contained containedin=gitHead nextgroup=gitIdentity skipwhite
syn match gitIdentityHeader /^\%(Author\|Commit\|Tagger\):/ contained containedin=gitHead nextgroup=gitIdentity skipwhite
syn match gitDateHeader /^\%(AuthorDate\|CommitDate\|Date\):/ contained containedin=gitHead nextgroup=gitDate skipwhite