{filetype,syntax}.txt: Update Vim 8.2.4843

Author: tsuyoshicho

en/filetype.txt

@@ -143,6 +143,7 @@ variables can be used to overrule the filetype used for certain extensions:
 	*.asp		g:filetype_asp	|ft-aspvbs-syntax| |ft-aspperl-syntax|
 	*.bas		g:filetype_bas	|ft-basic-syntax|
 	*.cfg		g:filetype_cfg
+	*.csh		g:filetype_csh  |ft-csh-syntax|
 	*.dat		g:filetype_dat
 	*.frm		g:filetype_frm	|ft-form-syntax|
 	*.fs		g:filetype_fs	|ft-forth-syntax|
@@ -154,6 +155,8 @@ variables can be used to overrule the filetype used for certain extensions:
 	*.pl		g:filetype_pl
 	*.pp		g:filetype_pp	|ft-pascal-syntax|
 	*.prg		g:filetype_prg
+	*.r		g:filetype_r
+	*.sql		g:filetype_sql	|ft-sql-syntax|
 	*.src		g:filetype_src
 	*.sys		g:filetype_sys
 	*.sh		g:bash_is_sh	|ft-sh-syntax|

en/syntax.txt

@@ -1,4 +1,4 @@
-*syntax.txt*	For Vim version 8.2.  Last change: 2022 Apr 06
+*syntax.txt*	For Vim version 8.2.  Last change: 2022 Apr 24
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -2197,6 +2197,15 @@ $VIMRUNTIME/syntax/syntax.vim).
   mv_finance	 mv_logic	mv_powseries
 
 
+MARKDOWN						*ft-markdown-syntax*
+
+If you have long regions there might be wrong highlighting.  At the cost of
+slowing down displaying, you can have the engine look further back to sync on
+the start of a region, for example 500 lines: >
+
+	:let g:markdown_minlines = 500
+
+
 MATHEMATICA		*mma.vim* *ft-mma-syntax* *ft-mathematica-syntax*
 
 Empty *.m files will automatically be presumed to be Matlab files unless you