Bugfix/issue 27

[ziva777]

No description provided.

[codecov]

Codecov Report

Merging #29 into master will increase coverage by 0.34%.
The diff coverage is 98.73%.

@@            Coverage Diff             @@
##           master      #29      +/-   ##
==========================================
+ Coverage   96.41%   96.76%   +0.34%     
==========================================
  Files           4        5       +1     
  Lines         921      988      +67     
==========================================
+ Hits          888      956      +68     
+ Misses         33       32       -1     

Impacted Files	Coverage Δ
pg_variables.c	97.41% <98.73%> (+0.35%)	⬆️
pg_bin/include/postgresql/server/nodes/pg_list.h	100.00% <0.00%> (ø)

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[ololobus]

All changes look reasonable to me, although I thought it will be easier to implement :( The only doubt I have is that how safe it is, but from the first sight it looks sane