Wow, that got really mangled somewhere! Here's the main part of the
test script again. Hopefully it'll come through OK this time.
histt() {
local space=''
space="${1:+ }" # set space to a space of there's a $1
local hist
local comment
hist=$(history 1)
hist="${hist# *[0-9]* }"
echo "....before...."
history 3
comment="some comment"
history -s "$space$hist # $comment"
echo "....after...."
history 3
PROMPT_COMMAND=$previous_prompt_command # put things back like you
found them
unset previous_prompt_command
unset histt
}
previous_prompt_command=$PROMPT_COMMAND
PROMPT_COMMAND="histt $1" # set up and run it
