channel.txt: Update Vim 8.2.5167

Author: tsuyoshicho

en/channel.txt

@@ -1,4 +1,4 @@
-*channel.txt*      For Vim version 8.2.  Last change: 2022 Jun 04
+*channel.txt*      For Vim version 8.2.  Last change: 2022 Jun 23
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -464,8 +464,10 @@ a close callback to the channel.
 
 To read all normal output from a RAW channel that is available: >
 	let output = ch_readraw(channel)
-To read the error output: >
+To read all error output from a RAW channel that is available:: >
 	let output = ch_readraw(channel, {"part": "err"})
+Note that if the channel is in NL mode, ch_readraw() will only return one line
+for each call.
 
 ch_read() and ch_readraw() use the channel timeout.  When there is nothing to
 read within that time an empty string is returned.  To specify a different
@@ -1552,36 +1554,5 @@ The "params" field is optional: >
 	"params": <list|dict>
     }
 
-Depending on the use case, you can use the ch_evalexpr(), ch_sendexpr() and
-ch_sendraw() functions on the same channel.
-
-A LSP request message has the following format (expressed as a Vim Dict).  The
-"params" field is optional: >
-
-    {
-	"jsonrpc": "2.0",
-	"id": <number>,
-	"method": <string>,
-	"params": <list|dict>
-    }
-
-A LSP response message has the following format (expressed as a Vim Dict).  The
-"result" and "error" fields are optional: >
-
-    {
-	"jsonrpc": "2.0",
-	"id": <number>,
-	"result": <vim type>
-	"error": <dict>
-    }
-
-A LSP notification message has the following format (expressed as a Vim Dict).
-The "params" field is optional: >
-
-    {
-	"jsonrpc": "2.0",
-	"method": <string>,
-	"params": <list|dict>
-    }
-
+<
  vim:tw=78:ts=8:noet:ft=help:norl: