am: Fix launching of pager
The pagination functionality in git am has some problems:
- It does not check if stdout is a tty, so it always paginates.
- If $GIT_PAGER uses any environment variables, they are being
ignored, since it does not run $GIT_PAGER through eval.
- If $GIT_PAGER is set to the empty string, instead of passing
output through to stdout, it tries to run $dotest/patch.
Fix them. While at it, move the definition of git_pager() to
git-sh-setup so authors of other commands are not tempted to
reimplement it with the same mistakes.
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/git-am.sh b/git-am.sh
index 3c08d53..b11af03 100755
--- a/git-am.sh
+++ b/git-am.sh
@@ -663,10 +663,7 @@
[eE]*) git_editor "$dotest/final-commit"
action=again ;;
[vV]*) action=again
- : ${GIT_PAGER=$(git var GIT_PAGER)}
- : ${LESS=-FRSX}
- export LESS
- $GIT_PAGER "$dotest/patch" ;;
+ git_pager "$dotest/patch" ;;
*) action=again ;;
esac
done
