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Fix documentation of psql's ECHO all mode.

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"ECHO all" is ignored for interactive input, and has been for a very long
time, though possibly not for as long as the documentation has claimed the
opposite.  Fix that, and also note that empty lines aren't echoed, which
while dubious is another longstanding behavior (it's embedded in our
regression test files for one thing).  Per bug #12721 from Hans Ginzel.

In HEAD, also improve the code comments in this area, and suppress an
unnecessary fflush(stdout) when we're not echoing.  That would likely
be safe to back-patch, but I'll not risk it mere hours before a release
wrap.
This commit is contained in:
Tom Lane 2015-01-31 18:35:27 -05:00
parent c9048d353f
commit ad48256ba3
1 changed files with 7 additions and 7 deletions
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14
doc/src/sgml/ref/psql-ref.sgml
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@ -53,8 +53,8 @@ PostgreSQL documentation
<term><option>--echo-all</></term> <term><option>--echo-all</></term>
<listitem> <listitem>
<para> <para>
Print all input lines to standard output as they are read. This is more Print all nonempty input lines to standard output as they are read.
useful for script processing than interactive mode. This is (This does not apply to lines read interactively.) This is
equivalent to setting the variable <varname>ECHO</varname> to equivalent to setting the variable <varname>ECHO</varname> to
<literal>all</literal>. <literal>all</literal>.
</para> </para>
@ -2703,13 +2703,13 @@ bar
<term><varname>ECHO</varname></term> <term><varname>ECHO</varname></term>
<listitem> <listitem>
<para> <para>
If set to <literal>all</literal>, all lines If set to <literal>all</literal>, all nonempty input lines are printed
entered from the keyboard or from a script are written to the standard output to standard output as they are read. (This does not apply to lines
before they are parsed or executed. To select this behavior on program read interactively.) To select this behavior on program
start-up, use the switch <option>-a</option>. If set to start-up, use the switch <option>-a</option>. If set to
<literal>queries</literal>, <literal>queries</literal>,
<application>psql</application> merely prints all queries as <application>psql</application> prints each query to standard output
they are sent to the server. The switch for this is as it is sent to the server. The switch for this is
<option>-e</option>. <option>-e</option>.
</para> </para>
</listitem> </listitem>