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Groups > gnu.bash.bug > #11700

Substring expansion error when offset contains a colon

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When using ${parameter:offset:length} expansion, the parser doesn't account for all the ways that a colon can appear in "offset".

For example:

$ echo ${PARAM:${OFFSET:-0}}
-bash: ${OFFSET: bad substitution

or:

# declare -A A=([a:b]=0)
# echo ${PARAM:${A[a:b]}}
-bash: ${A[a: bad substitution

It seems that the issue is in the use of skiparith in verify_substring_values.  Switching to to skip_to_delim removes this issue.  The ${parameter/pattern/string} expansion uses skip_to_delim to search for the second '/' so I suspect it's use is appropriate here as well.

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Substring expansion error when offset contains a colon grishalevit@gmail.com - 2015-10-19 00:45 -0700
  Re: Substring expansion error when offset contains a colon Chet Ramey <chet.ramey@case.edu> - 2015-10-26 09:19 -0400

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