psql: add an optional execution-count limit to \watch.
\watch can now be told to stop after N executions of the query.
With the idea that we might want to add more options to \watch
in future, this patch generalizes the command's syntax to a list
of name=value options, with the interval allowed to omit the name
for backwards compatibility.
Andrey Borodin, reviewed by Kyotaro Horiguchi, Nathan Bossart,
Michael Paquier, Yugo Nagata, and myself
Discussion: https://postgr.es/m/CAAhFRxiZ2-n_L1ErMm9AZjgmUK=qS6VHb+0SaMn8sqqbhF7How@mail.gmail.com
Branch
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master
Details
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https://git.postgresql.org/pg/commitdiff/00beecfe839c878abb366b68272426ed5296bc2b
Modified Files
--------------
doc/src/sgml/ref/psql-ref.sgml | 10 +++-
src/bin/psql/command.c | 118 +++++++++++++++++++++++++++++++------
src/bin/psql/help.c | 2 +-
src/bin/psql/t/001_basic.pl | 33 ++++++++---
src/test/regress/expected/psql.out | 2 +-
src/test/regress/sql/psql.sql | 2 +-
6 files changed, 135 insertions(+), 32 deletions(-)