fshow using execute action

Examples.md

@@ -276,15 +276,12 @@ fcoc() {
 ```sh
 # fshow - git commit browser
 fshow() {
-  local out sha q
-  while out=$(
-      git log --decorate=short --graph --oneline --color=always |
-      fzf --ansi --multi --no-sort --reverse --query="$q" --print-query); do
-    q=$(head -1 <<< "$out")
-    while read sha; do
-      [ -n "$sha" ] && git show --color=always $sha | less -R
-    done < <(sed '1d;s/^[^a-z0-9]*//;/^$/d' <<< "$out" | awk '{print $1}')
-  done
+  git log --graph --color=always \
+      --format="%C(auto)%h%d %s %C(black)%C(bold)%cr" "$@" |
+  fzf --ansi --no-sort --reverse --tiebreak=index --toggle-sort=\` \
+      --bind "ctrl-m:execute:
+                echo '{}' | grep -o '[a-f0-9]\{7\}' | head -1 |
+                xargs -I % sh -c 'git show --color=always % | less -R'"
 }
 ```