Revert patch for r3426 for bug 134466 and add warnings to docs.

svn path=/main/trunk/; revision=3437

3 files changed, 13 insertions, 3 deletions

diff --git a/bin/emerge b/bin/emerge
index 49f68a411..2b2a72fcb 100755
--- a/bin/emerge
+++ b/bin/emerge
@@ -109,7 +109,8 @@ def normpath(mystr):
 def userquery(prompt, responses=None, colours=None):
 	"""Displays a prompt and a set of responses, then waits for a response
 	which is checked against the responses and the first to match is
-	returned.
+	returned.  An empty response will match the first value in responses.  The
+	input buffer is *not* cleared prior to the prompt!
 
 	prompt: a String.
 	responses: a List of Strings.
@@ -133,7 +134,8 @@ def userquery(prompt, responses=None, colours=None):
 		while True:
 			response=raw_input("["+string.join([colours[i](responses[i]) for i in range(len(responses))],"/")+"] ")
 			for key in responses:
-				if response and response.upper()==key[:len(response)].upper():
+				# An empty response will match the first value in responses.
+				if response.upper()==key[:len(response)].upper():
 					return key
 			print "Sorry, response '%s' not understood." % response,
 	except (EOFError, KeyboardInterrupt):
diff --git a/man/emerge.1 b/man/emerge.1
index 6e70c7459..5af1799a2 100644
--- a/man/emerge.1
+++ b/man/emerge.1
@@ -197,6 +197,10 @@ in the same format as when using \fB\-\-pretend\fR; then ask whether to
 continue with the merge or abort.  Using \fB\-\-ask\fR is more efficient than 
 using \fB\-\-pretend\fR and then executing the same command without 
 \fB\-\-pretend\fR, as dependencies will only need to be calculated once.
+\fBWARNING: If the "Enter" key is pressed at the prompt (with no other input),
+it is interpreted as acceptance of the first choice.  Note that the input
+buffer is not cleared prior to the prompt, so an accidental press of the
+"Enter" key at any time prior to the prompt will be interpreted as a choice!\fR
 .TP
 .BR "\-\-buildpkg " (\fB\-b\fR)
 Tells emerge to build binary packages for all ebuilds processed in
diff --git a/pym/emergehelp.py b/pym/emergehelp.py
index 7bb554f3f..94f4d6732 100644
--- a/pym/emergehelp.py
+++ b/pym/emergehelp.py
@@ -157,7 +157,11 @@ def help(myaction,myopts,havecolor=1):
 		print "              ask whether to continue with the merge or abort. Using --ask is"
 		print "              more efficient than using --pretend and then executing the same"
 		print "              command without --pretend, as dependencies will only need to be"
-		print "              calculated once."
+		print "              calculated once. WARNING: If the \"Enter\" key is pressed at the"
+		print "              prompt (with no other input), it is interpreted as acceptance of"
+		print "              the first choice.  Note that the input buffer is not cleared prior"
+		print "              to the prompt, so an accidental press of the \"Enter\" key at any"
+		print "              time prior to the prompt will be interpreted as a choice!"
 		print
 		print "       "+green("--buildpkg")+" ("+green("-b")+" short option)"
 		print "              Tell emerge to build binary packages for all ebuilds processed"