Tilde expansion is part of shell word expansion: https://pubs.opengroup.org/onlinepubs/9799919799/utilities/V3_chap02.html#tag_19_06_01 https://pubs.opengroup.o

Tilde expansion is part of shell word expansion: https://pubs.opengroup.org/onlinepubs/9799919799/utilities/V3_chap02.html#tag_19_06_01 https://pubs.opengroup.org/onlinepubs/9799919799/utilities/V... Tilde expansion is the first operation in word expansion: > The expansions that are performed for a given word shall be performed in the following order: 1) Tilde expansion, parameter expansion, command substitution, and arithmetic expansion shall be performed, beginning to end. 2) Field splitting shall be performed on the portions of the fields generated by step 1. 3) Pathname expansion shall be performed, unless set -f is in effect. 4) Quote removal, if performed, shall always be performed last. See https://pubs.opengroup.org/onlinepubs/9799919799/utilities/V3_chap02.html#tag_19_06 https://pubs.opengroup.org/onlinepubs/9799919799/utilities/V... To see the whole shell specification, goto the main page at https://pubs.opengroup.org/onlinepubs/9799919799/ https://pubs.opengroup.org/onlinepubs/9799919799/. Select "Shell & Utilities" from the top-left frame, then "Shell Command Language" from the bottom-left frame.