georgew5656 commented on code in PR #15919:
URL: https://github.com/apache/druid/pull/15919#discussion_r1495897826
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distribution/docker/druid.sh:
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@@ -148,7 +148,7 @@ env | grep ^druid_ | while read evar;
do
# Can't use IFS='=' to parse since var might have = in it (e.g. password)
val=$(echo "$evar" | sed -e 's?[^=]*=??')
- var=$(echo "$evar" | sed -e 's?^\([^=]*\)=.*?\1?g' -e 's?_?.?g')
+ var=$(echo "$evar" | sed -e 's?^\([^=]*\)=.*?\1?g' -e 's?__?$UNDERSCORE?g'
-e 's?_?.?g' -e 's?$UNDERSCORE?_?g')
Review Comment:
its a placeholder to handle the escape char
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