Path: csiph.com!newsfeed.xs4all.nl!newsfeed7.news.xs4all.nl!goblin1!goblin.stu.neva.ru!usenet.stanford.edu!not-for-mail From: "E. Choroba" Newsgroups: gnu.bash.bug Subject: Expansions for array assignment not documented Date: Fri, 17 Apr 2020 11:48:37 +0200 (CEST) Lines: 43 Approved: bug-bash@gnu.org Message-ID: References: NNTP-Posting-Host: lists.gnu.org Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset=US-ASCII X-Trace: usenet.stanford.edu 1587128427 32104 209.51.188.17 (17 Apr 2020 13:00:27 GMT) X-Complaints-To: action@cs.stanford.edu To: bug-bash@gnu.org Envelope-to: bug-bash@gnu.org X-Virus-Scanned: amavisd-new at ufal.mff.cuni.cz X-X-Sender: jan.stepanek@triangle User-Agent: Alpine 2.21 (LSU 202 2017-01-01) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 195.113.20.158 X-Mailman-Approved-At: Fri, 17 Apr 2020 09:00:26 -0400 X-BeenThere: bug-bash@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Bug reports for the GNU Bourne Again SHell List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Mailman-Original-Message-ID: Xref: csiph.com gnu.bash.bug:16148 Configuration Information [Automatically generated, do not change]: Machine: x86_64 OS: linux-gnu Compiler: gcc -I/home/abuild/rpmbuild/BUILD/bash-4.4 -L/home/abuild/rpmbuild/BUILD/bash-4.4/../readline-7.0 Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64' -DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-suse-linux-gnu' -DCONF_VENDOR='suse' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL -DHAVE_CONFIG_H -I. -I. -I./include -I./lib -fmessage-length=0 -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables -fstack-clash-protection -g -D_GNU_SOURCE -DRECYCLES_PIDS -Wall -g -Wuninitialized -Wextra -Wno-switch-enum -Wno-unused-variable -Wno-unused-parameter -Wno-parentheses -ftree-loop-linear -pipe -DBNC382214=0 -DIMPORT_FUNCTIONS_DEF=0 -fprofile-use -fprofile-correction uname output: Linux triangle 4.12.14-lp151.28.44-default #1 SMP Fri Mar 20 18:20:20 UTC 2020 (dbf1aea) x86_64 x86_64 x86_64 GNU/Linux Machine Type: x86_64-suse-linux-gnu Bash Version: 4.4 Patch Level: 23 Release Status: release Description: Expansions in an assignment are documented under "SIMPLE COMMAND EXPANSION": > The text after the = in each variable assignment undergoes tilde > expansion, parameter expansion, command substitution, arithmetic > expansion, and quote removal before being assigned to the > variable. However, a compound assignment to an array is different: the values also undergo pathname and brace expansions: files=(*) numbers=({1..10}) Originally discovered by Roland at https://stackoverflow.com/q/61267714/1030675. Repeat-By: I've searched the whole "man bash" for "array" and haven't found this documented. It's possible I've missed the documentation. Fix: The additional expansions should be documented either in the paragraph quoted above, or in the "ARRAYS" section where compound assignment is described. Cheers, Ch.