vim-patch:9.1.0986: filetype: 'jj' filetype is a bit imprecise

Problem:  filetype: 'jj' filetype is a bit imprecise
Solution: rename 'jj' filetype to 'jjdescription'
          (Gregory Anders)

closes: vim/vim#16364

58c44e8833

Co-authored-by: Gregory Anders <greg@gpanders.com>

runtime/lua/vim/filetype.lua

@@ -631,7 +631,7 @@ local extension = {
   clp = 'jess',
   jgr = 'jgraph',
   jinja = 'jinja',
-  jjdescription = 'jj',
+  jjdescription = 'jjdescription',
   j73 = 'jovial',
   jov = 'jovial',
   jovial = 'jovial',

runtime/syntax/jjdescription.vim

@@ -21,4 +21,4 @@ hi def link jjAdded Added
 hi def link jjRemoved Removed
 hi def link jjChanged Changed
 
-let b:current_syntax = 'jj'
+let b:current_syntax = 'jjdescription'

test/old/testdir/test_filetype.vim

@@ -389,7 +389,7 @@ func s:GetFilenameChecks() abort
     \ 'jess': ['file.clp'],
     \ 'jgraph': ['file.jgr'],
     \ 'jinja': ['file.jinja'],
-    \ 'jj': ['file.jjdescription'],
+    \ 'jjdescription': ['file.jjdescription'],
     \ 'jovial': ['file.jov', 'file.j73', 'file.jovial'],
     \ 'jproperties': ['file.properties', 'file.properties_xx', 'file.properties_xx_xx', 'some.properties_xx_xx_file', 'org.eclipse.xyz.prefs'],
     \ 'jq': ['file.jq'],