Moved mdvimb to a standalone script (local, so far)

Get current version at https://netvor.info/scripts/mdvimb

dotfiles/bash/main.bashrc

@@ -258,18 +258,6 @@ fixnl() {
     rm "$cache"
 }
 
-mdvimb() {
-    #
-    # Open Markdown file in Vimb (no junk)
-    #
-    local file=$1; shift
-    case $file in
-        "") Markdown | vimb - "$@" ;;
-        -)  Markdown | vimb - "$@" ;;
-        *)  Markdown < "$file" | vimb - "$@"
-    esac
-}
-
 nlfor() {
     #
     # Replace $1 (or blank space) with newlines and fix final newline
@@ -507,6 +495,8 @@ export LESS=' -R '
 export PRETTY=color
 export PRETTY_DEBUG_EXCLUDE=inigrep
 
+export MDVIMB__CONVERTER=commonmark
+
 #shellcheck disable=SC2034
 {
     GIT_PS1_SHOWDIRTYSTATE=true