completion(fish): add back ; as line endings in fish script (#2570)

CHANGES.rst

@@ -7,6 +7,7 @@ Unreleased
 
 -   Fix issue with regex flags in shell completion. :issue:`2581`
 -   Bash version detection issues a warning instead of an error. :issue:`2574`
+-   Fix issue with completion script for Fish shell. :issue:`2567`
 
 
 Version 8.1.6

docs/shell-completion.rst

@@ -62,7 +62,7 @@ program name. This uses ``foo-bar`` as an example.
 
         .. code-block:: fish
 
-            eval (env _FOO_BAR_COMPLETE=fish_source foo-bar)
+            _FOO_BAR_COMPLETE=fish_source foo-bar | source
 
         This is the same file used for the activation script method
         below. For Fish it's probably always easier to use that method.

src/click/shell_completion.py

@@ -167,25 +167,25 @@ def __getattr__(self, name: str) -> t.Any:
 """
 
 _SOURCE_FISH = """\
-function %(complete_func)s
+function %(complete_func)s;
     set -l response (env %(complete_var)s=fish_complete COMP_WORDS=(commandline -cp) \
-COMP_CWORD=(commandline -t) %(prog_name)s)
+COMP_CWORD=(commandline -t) %(prog_name)s);
 
-    for completion in $response
-        set -l metadata (string split "," $completion)
+    for completion in $response;
+        set -l metadata (string split "," $completion);
 
-        if test $metadata[1] = "dir"
-            __fish_complete_directories $metadata[2]
-        else if test $metadata[1] = "file"
-            __fish_complete_path $metadata[2]
-        else if test $metadata[1] = "plain"
-            echo $metadata[2]
-        end
-    end
-end
+        if test $metadata[1] = "dir";
+            __fish_complete_directories $metadata[2];
+        else if test $metadata[1] = "file";
+            __fish_complete_path $metadata[2];
+        else if test $metadata[1] = "plain";
+            echo $metadata[2];
+        end;
+    end;
+end;
 
 complete --no-files --command %(prog_name)s --arguments \
-"(%(complete_func)s)"
+"(%(complete_func)s)";
 """