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Message-ID: <0829F14A385F6EC9FFE8989904B3256D@a-b.xyz>
To: 9front@9front.org
Subject: dnsquery(8): prompt on stderr
Date: Fri, 30 Aug 2019 11:13:24 +0200
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dnsquery(8) prints the interactive prompt on stdout together with
query results, making scripted usage unnecessarily difficult.

A straightforward solution is prompting on stderr instead: as
practiced by rc(1), among many others -- promptly taking care of
the issue:

	; echo 9front.org mx | ndb/dnsquery >[2]/dev/null

--
kvik

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diff -r 7789bbc91c22 sys/src/cmd/ndb/dnsquery.c
--- a/sys/src/cmd/ndb/dnsquery.c	Fri Aug 23 21:39:20 2019 +0200
+++ b/sys/src/cmd/ndb/dnsquery.c	Fri Aug 30 10:20:33 2019 +0200
@@ -58,7 +58,7 @@
 	Biobuf in;
 
 	Binit(&in, 0, OREAD);
-	for(print("> "); lp = Brdline(&in, '\n'); print("> ")){
+	for(fprint(2, "> "); lp = Brdline(&in, '\n'); fprint(2, "> ")){
 		n = Blinelen(&in) -1;
 		while(isspace(lp[n]))
 			lp[n--] = 0;
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