scripts/sscce.sh: default to short; add -l for long

src/scripts/sscce.sh

@@ -2,16 +2,38 @@
 #
 # Analog to WSO for SSCCE and MCVE (and HTAQTSW)
 
+usage()
+{
+    echo "Usage: $(basename $0 .sh) [-l]" >&2
+    exit 1
+}
+
+long=no
+while getopts l arg
+do
+    case "$arg" in
+    (l) long=yes;;
+    (*) usage;;
+    esac
+done
+
+shift $(($OPTIND - 1))
+if [ $# != 0 ]
+then usage
+fi
+
 echo 'MCVE ([Minimal, Complete, Verifiable Example](https://stackoverflow.com/help/mcve))'
 echo '(or MRE or whatever name SO now uses)'
 
 # Verified http not https 2019-05-15
 echo 'or an'
 echo 'SSCCE ([Short, Self-Contained, Correct Example](http://sscce.org/)).'
 
-# Verified http not https 2019-05-15
-echo 'See also'
-echo '[How to Ask Questions the Smart Way](http://www.catb.org/~esr/faqs/smart-questions.html)'
-
-#echo 'and [Writing the perfect question](http://tinyurl.com/stack-hints)'
-echo 'and [Writing the perfect question](https://codeblog.jonskeet.uk/2010/08/29/writing-the-perfect-question/)'
+if [ "$long" = "yes" ]
+then
+    # Verified http not https 2019-05-15
+    echo 'See also'
+    echo '[How to Ask Questions the Smart Way](http://www.catb.org/~esr/faqs/smart-questions.html)'
+    #echo 'and [Writing the perfect question](http://tinyurl.com/stack-hints)'
+    echo 'and [Writing the perfect question](https://codeblog.jonskeet.uk/2010/08/29/writing-the-perfect-question/)'
+fi