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Decarlo110

Post subject: Line Continuation

Posted: September 26th, 2005, 4:25 am

Joined: December 15th, 2004, 10:24 pm
Posts: 303
Location: United States

The following is reproducible on Win2000:

Code:

if (Color1 = blankVar and Color2 = "white"
   || Color3 = someOtherColor )
   AND ( ProductIsAvailableInColor = "testVar" )

; AND/OR starting the above line causes error on Win2000
; ||, &&, ",", and "." are accepted

   msgbox, 1
else
   msgbox, 2

Line Text: AND ( ProductIsAvailableInColor = "testVar" )
Error: This line does not contain a recognized action.

The script was not reloaded; the old version will remain in effect.

_________________
1) The Open Source Definition http://www.opensource.org/docs/definition_plain.php

2) Intuitive. Logical. Versatile. Adaptable. <<AutoHotkey>>

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Laszlo

Post subject:

Posted: September 26th, 2005, 6:30 pm

Joined: February 14th, 2005, 4:05 pm
Posts: 4710
Location: Boulder, CO

I know "If expression and expression" works, but I could not find in the Help that it was allowed. Is it?

In your case the extra pair of brackets, like in

Code:

if ( (a = 0)
   AND (c = 0) )

does not make the script work (looks like a bug), but below it makes a difference. This one fails

Code:

if (a = 0)
   AND (b = 0)
 MsgBox True

but this script works

Code:

if (a = 0
   AND b = 0)
 MsgBox True

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shimanov

Post subject:

Posted: September 26th, 2005, 7:52 pm

Joined: September 25th, 2005, 4:31 pm
Posts: 610

Laszlo wrote:

I know "If expression and expression" works, but I could not find in the Help that it was allowed. Is it?

It is allowed. From the "Expressions" section:

help file wrote:

Although this is usually accomplished by enclosing the entire expression in parentheses, it can also be done with something like if (x > 0) and (y > 0).

and from the "line continuation" section:

help file wrote:

if (Color = "Red" or Color = "Green" or Color = "Blue"
or Color = "Black" or Color = "Gray" or Color = "White")
and ProductIsAvailableInColor(Product, Color)

Unfortunately, this means that there is indeed a bug, handling expressions in conjunction with line continuation.

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Laszlo

Post subject:

Posted: September 26th, 2005, 8:18 pm

Joined: February 14th, 2005, 4:05 pm
Posts: 4710
Location: Boulder, CO

I overlooked that! Chris, it would be nice to add the same note as at the Expressions to the "If (expression)" Help entry, explaining that "If function(..." and "If (expression)..." don't need the outermost parentheses.

Also, this script is easy to be misunderstood

Code:

if a = 0 or b = 0
   MsgBox True

It is not the same as

Code:

if (a = 0 or b = 0)
   MsgBox True

The first variant tests whether the variable "a" is equal to the string "0 or b = 0", excluding the quotation marks. It shows the danger to be liberal with the syntax.

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shimanov

Post subject:

Posted: September 26th, 2005, 10:11 pm

Joined: September 25th, 2005, 4:31 pm
Posts: 610

Laszlo wrote:

Also, this script is easy to be misunderstood

Code:

if a = 0 or b = 0
   MsgBox True

It is not the same as

Code:

if (a = 0 or b = 0)
   MsgBox True

The first variant tests whether the variable "a" is equal to the string "0 or b = 0", excluding the quotation marks. It shows the danger to be liberal with the syntax.

Exactly! There were many mistrials before I used the various syntax successfully. In the end, I decided to enclose everything within parenthesis.

Oh well... Such is the price to be paid to ensure backwards compatibility.

Now to fix the bug.

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Chris

Post subject:

Posted: September 27th, 2005, 2:37 am

Joined: March 2nd, 2004, 3:36 pm
Posts: 10720

Laszlo wrote:

it would be nice to add the same note as at the Expressions to the "If (expression)" Help entry, explaining that "If function(..." and "If (expression)..." don't need the outermost parentheses.

Thanks, I've done this.

Edit: The line continuation issue has been fixed in today's v1.0.38.06.

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