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[[...]] documentation claims tilde expansion and process substitution oc


From: Lawrence Velázquez
Subject: [[...]] documentation claims tilde expansion and process substitution occur within double quotes
Date: Fri, 26 Apr 2024 17:36:11 -0400
User-agent: Cyrus-JMAP/3.11.0-alpha0-386-g4cb8e397f9-fm-20240415.001-g4cb8e397

Both the manual [1] and man page [2] state:

        The words between the [[ and ]] do not undergo word splitting
        and filename expansion.  The shell performs tilde expansion,
        parameter and variable expansion, arithmetic expansion,
        command substitution, process substitution, and quote removal
        on those words (the expansions that would occur if the words
        were enclosed in double quotes).

However, the parenthetical is misleading because tilde expansion
and process substitution don't occur within double quotes.  (I just
helped an IRC user who'd been confused by this text.)

[1] 
https://git.savannah.gnu.org/cgit/bash.git/tree/doc/bashref.texi?h=devel&id=9c430f6bf37984e01977cc17f7066a6498aa4f18#n1153
[2] 
https://git.savannah.gnu.org/cgit/bash.git/tree/doc/bash.1?h=devel&id=9c430f6bf37984e01977cc17f7066a6498aa4f18#n762

-- 
vq



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