prompt

I want my bash prompt to include:

• history number (apply with !number)
• number of background jobs
• hostname
• working directory
• exit status of last command (only if != 0: "Rule of Silence")
• git head (only if in git tree)
• git dirty status (I:index M:modified U:untracked)
• effective UID

bash prompt with exit status and git head

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flaw and fix for bg-jobs

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• New: locale independent

• a version with ansi

• a version with tput