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 # Tasks
 
+## TODO Add completion script {#task-daa4a3e7-bcb4-4fe1-a0df-e73c7d17e43c}
+- TODO in 2021-01-29
+
+---
+
+How to support multiple shells without duplicating the code?
+
+The major one is Bash, but also consider zsh and fish. Also tcsh and oilsh.
+
 ## DONE Is tac POSIX {#task-98478c0f-97ac-4667-acdc-9373e2841de9}
 - DONE in 2021-01-26
 - TODO in 2021-01-26