add preview versions for fcoc and fshow

Examples.md

@@ -428,6 +428,30 @@ fshow() {
 FZF-EOF"
 }
 ```
+```sh
+alias glNoGraph='git log --color=always --format="%C(auto)%h%d %s %C(black)%C(bold)%cr% C(auto)%an" "$@"'
+local _gitLogLineToHash="echo {} | grep -o '[a-f0-9]\{7\}' | head -1"
+local _viewGitLogLine="$_gitLogLineToHash | xargs -I % sh -c 'git show --color=always % | diff-so-fancy'"
+
+# fcoc_preview - checkout git commit with previews
+fcoc_preview() {
+  local commit
+  commit=$( glNoGraph |
+    fzf --no-sort --reverse --tiebreak=index --no-multi \
+        --preview $_viewGitLogLine ) &&
+  git checkout $(echo "$commit" | sed "s/ .*//")
+}
+
+# fshow_preview - git commit browser with previews
+fshow_preview() {
+    glNoGraph |
+        fzf --no-sort --reverse --tiebreak=index --no-multi \
+            --preview $_viewGitLogLine \
+                --header "enter to view, alt-y to copy hash" \
+                --bind "enter:execute:$_viewGitLogLine   | less -R" \
+                --bind "alt-y:execute:$_gitLogLineToHash | xclip"
+}
+```
 
 ```sh
 # fcs - get git commit sha