Re: [Gimp-user] Gimp-user Digest, Vol 94, Issue 25
Dillon wrote: > Is that really a "must" ? It turns out I was missing variable declarations, > but I have never provided initial values when declaring variables in a let > block, and that doesn't seem to cause issues. Yes, it is a must unless you are using GIMP 2.4 or earlier. The TinyScheme component of GIMP more closely follows the Scheme standard. The standard requires variables in a lot block to have an initial value, and all variables must be declared before first use. You should take a look at the Script-Fu migration guide at http://www.gimp.org/docs/script-fu-update.html and my notes at http://www.ve3syb.ca/wiki/doku.php?id=software:sf:updating-scripts (which cover most of the same points). > I think that this line is not returning the number of layers as we're > expecting. I tried using gimp-message to write the number of layers out to > the console, but it generates another batch execution error. [snip] > (gimp-message "The current file has the following number of layers: ") > (gimp-message num-layers) The problem with the above is you are passing an integer to gimp-message instead of passing a string. You need to wrap num-layers in a call to number->string. You can combine the two calls to gimp-message so the number of layers appears in the message by doing the following: (gimp-message (string-append "The current file has the following number of layers: " (number->string num-layers))) ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Gimp-user Digest, Vol 94, Issue 25
Is that really a "must" ? It turns out I was missing variable declarations, but I have never provided initial values when declaring variables in a let block, and that doesn't seem to cause issues. I'll experiment. On Sat, Jul 24, 2010 at 9:39 AM, wrote: Message: 2 > Date: Sat, 24 Jul 2010 11:45:24 -0400 > From: Kevin Cozens > Subject: Re: [Gimp-user] Script-Fu for batch image conversion > To: gimp-user > Message-ID: <4c4b0a94.7010...@ve3syb.ca> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Dillon wrote: > > (set! num-layers (car (gimp-image-get-layers newimage))) > > (set! layerIDs (cadr (gimp-image-get-layers newimage))) > > What error messages do you get when the above lines are included? > > > (define (batch-save-as-xcf pattern) > > (let* ( > > (filelist (cadr (file-glob pattern 1))) > > (fileparts) > > (xcfname) > > (filename) > > (image) > > (newimage) > > (drawable) > > ) > > The declarations for variables "fileparts" through to "drawable" are wrong. > You must provide an initial value when defining a variable in a let block. > > The simple solution is to add a 0 or -1 to the declarations for numeric > variables and "" string variables. Any value will work but it helps to > stick to the a value similar to the type of value the variable could > typically hold. > ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
