Item10324: zeroresults="0" doesn't print anything

Priority:	CurrentState:	AppliesTo:	Component:	WaitingFor:
Normal	Closed	Engine	SEARCH	Main.CrawfordCurrie, Main.PaulHarvey, Main.SvenDowideit

It should emit a numeric "0" if this search comes up with nothing:

%SEARCH{"asdfbargleghjkl" excludetopic="%TOPIC%" type="query" zeroresults="0"}%

Result:

I guess the code measures whether something is false instead of whether it's defined

-- PaulHarvey - 07 Feb 2011

mmm, I see what you might expect, but...

from the foswiki 1.0 docco:

zeroresults="off"

Suppress all output if there are no hits

zeroresults="on", displays: "Number of topics: 0"

vs the foswiki trunk docco: | zeroresults="off" or zeroresults="..."| Suppress/replace all output if there are no hits - can also be set to a FormattedSearch? string to customise the output | zeroresults="on" - displays the summary, and number of topics found. "Number of topics: 0" |

now, here's the pain. boolean parameters in foswiki macros are evaluated in a perl-ish (is that orc-ish?) way

so I think the wat to get what you want, is to use NOP or somesuch

tossing in a unit test to see

eg:

%SEARCH{"asdfbargleghjkl" excludetopic="%TOPIC%" type="query" zeroresults="%NOP%0"}%

Result: 0

I'm not sure that we can resolve this safely and consistently with other boolean params - so I wimpled (sic) out and just added a little docco and some unit tests showing the madness.

If you disagree - excellent

---

I think a <nop>/%NOP% is fine. Personally I've always encouraged use of on and off, but I agree with what you've done.

-- PaulHarvey - 18 Feb 2011