I would like to implement item from TODO marked as easy: "Add \i option
to bring in the specified file as a quoted literal". I understand intent
of this item, to be able to have parts of query written in separate
files (now it is impossible, because \i tries to execute content of file
as a separate command by function process_file).

I will add command "iq" and "include_quoted" in src/bin/psql/command.c
(in the same block where "i" and "ir" are implemented). If "iq" is
detected I will call new function do_append(fname, query_buf) which will
read file into query_buffer and return status PSQL_CMD_NEWEDIT.

User perespective:
User will be able to append file to current buffer. It will be possible
to include code of procedure, or where part of select statement.
select * from
/iq where_part.sql
and lang_name='SQL'

Variables like :myvar will be replaced with their values, is that ok?
Shall I start to code this patch?

Best regards
Piotr Marcinczyk

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