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lang-bash
${PATH:+:${PATH}}is confusing because the first:is part of the syntax and the second:is the list delimiter.:is context-sensitive. It's a rudimentary form of AI. :-):+is acceptable to include in.profile, since that's POSIX compatible, right?"$p/bin${PATH:+:}$PATH"like shown in Nix Pill 12? Seems legit and marginally simpler (less braces) to me