On 9/4/22 10:48 PM, Hyunho Cho wrote:

Bash Version: 5.1
Patch Level: 16
Release Status: release

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#### "gcc --help" is already a short string, but the system hangs.
( without using extended pattern, there is no such problem )

bash$ help=$( gcc --help )

bash$ echo "${help//+([$' \t\n'])/ }"

If you want the output in a single string, this is a two-liner with sed and
mapfile, and it runs the 90K output of gcc --help in about a tenth of a
second on my machine.

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    c...@case.edu    http://tiswww.cwru.edu/~chet/


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