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bash: handle existing ; in PROMPT_COMMAND - #11260
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If an existing PROMPT_COMMAND was a string ending in ; (and maybe some spaces), we'd add a redundant ;, resulting in a syntax error. Now we strip any trailing `;[[:space:]]*` characters from the original string before add ours.
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If an existing PROMPT_COMMAND was a string ending in ; (and maybe some spaces), we'd add a redundant ;, resulting in a syntax error. Now we strip any trailing
;[[:space:]]*characters from the original string before add ours.Fixes #11259