jj: Add alias for showing a commit with description

vcs/jj/config/sh/alias.d/jj.sh

@@ -8,13 +8,21 @@ alias j="jj log -r '@ | ancestors(trunk()..(visible_heads() & mine()), 2) | trun
 if exist lazyjj; then
     alias lj="lazyjj"
 fi
-alias js="jj status"
 
-alias jd="jj diff"
 alias jn="jj new"
 alias jds="jj describe"
 alias jc="jj commit"
 
+# finding out the current snapshot
+js() {
+    if [ "$#" -eq 0 ]; then
+        jj status
+    else
+        jj show "$*"
+    fi
+}
+alias jw="jj show"
+alias jd="jj diff"
 alias jln="jj log -T builtin_log_oneline"
 alias jl="jj log -r '@ | ancestors(trunk()..(visible_heads() & mine()), 3) | trunk()' -T builtin_log_oneline"
 alias jL="jj log -r 'all()'"