Add tab-completion for \unset and valid setting values of psql variables.
This commit also changes tab-completion for \set so that it displays
all the special variables like COMP_KEYWORD_CASE. Previously it displayed
only variables having the set values. Which was not user-friendly for
those who want to set the unset variables.
This commit also changes tab-completion for :variable so that only the
variables having the set values are displayed. Previously even unset
variables were displayed.
Pavel Stehule, modified by me.
Branch
------
master
Details
-------
http://git.postgresql.org/pg/commitdiff/e15c4ab5fb0de2cab393ed4be2136e1832746412
Modified Files
--------------
doc/src/sgml/ref/psql-ref.sgml | 9 ++-
src/bin/psql/tab-complete.c | 139 ++++++++++++++++++++++++++++++++++------
2 files changed, 127 insertions(+), 21 deletions(-)