added tab completions for choose

(cherry picked from commit ce6b122f7f)

CHANGELOG.rst

@@ -8,6 +8,7 @@ This release of fish introduces the following small enhancements:
 - ``history merge`` when in private mode is now an error, rather than wiping out other sessions' history (:issue:`9050`).
 - The error message when launching a command that is built for the wrong architecture on macOS is more helpful (:issue:`9052`).
 - Added completions for:
+  - ``choose`` (:issue:`9065`)
   - ``expect`` (:issue:`9060`)
   = ``navi`` (:issue:`9064`)
   - ``qdbus`` (:issue:`9031`)

share/completions/choose.fish

@@ -0,0 +1,15 @@
+complete choose --no-files
+
+# flags:
+complete choose -s c -l character-wise -d "Choose fields by character number"
+complete choose -s d -l debug -d "Activate debug mode"
+complete choose -s x -l exclusive -d "Use exclusive ranges, similar to array indexing in many programming languages"
+complete choose -x -s h -l help -d "Prints help information"
+complete choose -s n -l non-greedy -d "Use non-greedy field separators"
+complete choose -l one-indexed -d "Index from 1 instead of 0"
+complete choose -s V -l version -d "Prints version information"
+
+# options:
+complete choose -x -s f -l field-separator -d "Specify field separator other than whitespace, using Rust `regex` syntax"
+complete choose -r -s i -l input -d "Specify input file"
+complete choose -x -s o -l output-field-separator -d "Specify output field separator"