Drop redundant newline

go/logic/server.go

@@ -144,13 +144,13 @@ func (this *Server) applyServerCommand(command string, writer *bufio.Writer) (pr
 	switch command {
 	case "help":
 		{
-			fmt.Fprintln(writer, `available commands:
+			fmt.Fprintf(writer, `available commands:
 status                               # Print a detailed status message
 sup                                  # Print a short status message
 coordinates													 # Print the currently inspected coordinates
 chunk-size=<newsize>                 # Set a new chunk-size
 dml-batch-size=<newsize>             # Set a new dml-batch-size
-nice-ratio=<ratio>                   # Set a new nice-ratio, immediate sleep after each row-copy operation, float (examples: 0 is aggressive, 0.7 adds 70% runtime, 1.0 doubles runtime, 2.0 triples runtime, ...)
+nice-ratio=<ratio>                   # Set a new nice-ratio, immediate sleep after each row-copy operation, float (examples: 0 is aggressive, 0.7 adds 70%% runtime, 1.0 doubles runtime, 2.0 triples runtime, ...)
 critical-load=<load>                 # Set a new set of max-load thresholds
 max-lag-millis=<max-lag>             # Set a new replication lag threshold
 replication-lag-query=<query>        # Set a new query that determines replication lag (no quotes)
@@ -163,8 +163,7 @@ no-throttle                          # End forced throttling (other throttling m
 unpostpone                           # Bail out a cut-over postpone; proceed to cut-over
 panic                                # panic and quit without cleanup
 help                                 # This message
-- use '?' (question mark) as argument to get info rather than set. e.g. "max-load=?" will just print out current max-load.
-`)
+- use '?' (question mark) as argument to get info rather than set. e.g. "max-load=?" will just print out current max-load.\n\n`)
 		}
 	case "sup":
 		return ForcePrintStatusOnlyRule, nil

script/ensure-go-installed

@@ -1,20 +1,20 @@
 #!/bin/bash
 
-PREFERRED_GO_VERSION=go1.9.2
-SUPPORTED_GO_VERSIONS='go1.[89]'
+PREFERRED_GO_VERSION=go1.12.5
+SUPPORTED_GO_VERSIONS='go1.12'
 
 GO_PKG_DARWIN=${PREFERRED_GO_VERSION}.darwin-amd64.pkg
-GO_PKG_DARWIN_SHA=8b4f6ae6deae1150d2e341d02c247fd18a99af387516540eeb84702ffd76d3a1
+GO_PKG_DARWIN_SHA=2501498ad111f33a863ebd80eda0a34d2f6d62bb59fa20d523935e5c1732614f
 
 GO_PKG_LINUX=${PREFERRED_GO_VERSION}.linux-amd64.tar.gz
-GO_PKG_LINUX_SHA=de874549d9a8d8d8062be05808509c09a88a248e77ec14eb77453530829ac02b
+GO_PKG_LINUX_SHA=aea86e3c73495f205929cfebba0d63f1382c8ac59be081b6351681415f4063cf
 
 export ROOTDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )/.." && pwd )"
 cd $ROOTDIR
 
 # If Go isn't installed globally, setup environment variables for local install.
 if [ -z "$(which go)" ] || [ -z "$(go version | grep "$SUPPORTED_GO_VERSIONS")" ]; then
-  GODIR="$ROOTDIR/.vendor/go19"
+  GODIR="$ROOTDIR/.vendor/go1.12"
 
   if [ $(uname -s) = "Darwin" ]; then
     export GOROOT="$GODIR/usr/local/go"