gh-116943: makesetup to allow missing ending line break for Setup files

[temp-repo-259848]

• Issue: makesetup to allow missing ending line break for Setup files #116943

[ghost]

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[vstinner]

cc @erlend-aasland

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• 126801235+yghjn@users.noreply.github.com

[erlend-aasland]

This is not a problem for most folks; we've had this bash code since 1994. IOW, most people have text editors that add new lines. Either we just update the docs to say that Setup.local must contain EOL, or we simply add an implicit newline in the loop:

diff --git a/Modules/makesetup b/Modules/makesetup
index f6cf695b457..104c824b846 100755
--- a/Modules/makesetup
+++ b/Modules/makesetup
@@ -90,6 +90,7 @@ NL='\
 # Main loop
 for i in ${*-Setup}
 do
+       echo ''  # Add a linebreak so we don't choke on files missing EOL.
        case $i in
        -n)     echo '*noobjects*';;
        *)      echo '*doconfig*'; cat "$i";;

[erlend-aasland]

Closing in favour of #139100, and also since the CLA is not signed.