Use new shell command substitution syntax #1915
                
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Changes
book/05-distributed-git/sections/maintaining.asc
Context
The old
commandsyntax is considered obsolete.We can take this opportunity to teach proper syntax going forward, also putting command output in double-quotes eliminating unintended separation into multiple arguments for space characters.
Rationale: https://unix.stackexchange.com/a/126928
No other occurrences were found: