Configuration Information [Automatically generated, do not change]: Machine: x86_64 OS: linux-gnu Compiler: gcc Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64' -DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-pc-linux-gnu' -DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL -DHAVE_CONFIG_H -I. -I../. -I.././include -I.././lib -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -fdebug-prefix-map=/build/bash-7fckc0/bash-4.4=. -fstack-protector-strong -Wformat -Werror=format-security -Wall -no-pie -Wno-parentheses -Wno-format-security uname output: Linux tomas 4.9.0-5-amd64 #1 SMP Debian 4.9.65-3+deb9u2 (2018-01-04) x86_64 GNU/Linux Machine Type: x86_64-pc-linux-gnu
Bash Version: 4.4 Patch Level: 12 Release Status: release Description: When trying to assign to a space key of an associative array, the result differs with regards to the way the operation is performed. 1. ((A[$a]++)) 2. let "A[' ']++" 3. A[" "]=1 I've asked a question about this here: https://unix.stackexchange.com/questions/419488/bash-space-as-a-key-in-an-assoc$ Repeat-By: 1. $ unset A; a=" ";declare -A A; ((A[$a]++)); declare -p A declare -A A 2. $ unset A; a=" ";declare -A A; let "A[$a]=1"; declare -p A declare -A A 3. $ unset A; a=" ";declare -A A; A[$a]=1; declare -p A declare -A A=([" "]="1" )
