Emacs

fix: Obsolete when-let and if-let #868

Job	Run time
test (ubuntu-latest, 26.3, false)	28s
test (ubuntu-latest, 27.2, false)	27s
test (ubuntu-latest, 28.2, false)	28s
test (ubuntu-latest, 29.4, false)	40s
test (macos-latest, 28.2, false)	1m 7s
test (macos-latest, 29.4, false)	1m 36s
test (windows-latest, 26.3, false)	2m 59s
test (windows-latest, 27.2, false)	1m 7s
test (windows-latest, 28.2, false)	1m 59s
test (windows-latest, 29.4, false)	3m 35s
test (ubuntu-latest, snapshot, true)	30s
test (macos-latest, snapshot, true)	1m 4s
test (windows-latest, snapshot, true)	4m 26s
	20m 26s

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