Make sage-logger output to stdout the name(s) of log(s) a line is bei…

…ng logged to.

build/bin/sage-logger

@@ -22,14 +22,16 @@
 
 cmd="$1"
 logfile="$2"
+logname="$(basename $logfile .log)"
 logdir=`dirname "$logfile"`
 
 mkdir -p "$logdir"
 
 # Redirect stdout and stderr to a subprocess running tee.
 # We trap SIGINT such that SIGINT interrupts the main process being
 # run, not the logging.
-( exec 2>&1; eval "$cmd" ) | ( trap '' SIGINT; tee -a "$logfile" )
+( exec 2>&1; eval "$cmd" ) | ( trap '' SIGINT; tee -a "$logfile" ) | \
+    (while read line; do echo [${logname}] $line; done)
 
 pipestatus=(${PIPESTATUS[*]})