Re: Sneaky white space
- To: mathgroup at smc.vnet.net
- Subject: [mg113395] Re: Sneaky white space
- From: Sam Takoy <sam.takoy at yahoo.com>
- Date: Wed, 27 Oct 2010 05:14:43 -0400 (EDT)
________________________________ From: John Fultz <jfultz at wolfram.com> To: sam.takoy at yahoo.com; mathgroup at smc.vnet.net Sent: Tue, October 26, 2010 10:49:12 AM Subject: [mg113395] Re: [mg113388] Sneaky white space On Tue, 26 Oct 2010 05:35:41 -0400 (EDT), Sam Takoy wrote: > Hi, > > I'm working nicely along, when all of a sudden Mathematica tells me that > essentially it can't NIntegrate[Cos[a], {a, -Pi, Pi}]. After 30 minutes > of searching, I discover that I have an invisible TextCell[""] attached > to the expression. > > First of all, I don't know what I did to put it there. What DID I do? > Some inadvertent Ctrl-Key combination? > > Second, TextCell[""] is mostly invisible and hard to find. Is there a > way to make it visible or to find it more easily? > > Many thanks in advance, > > > Sam It's hard to offer any definitive comments without knowing more about what happened, but I'll offer a bit of speculation. Possibly you may have accidentally pressed Ctrl+9 at some point while editing the input? Or maybe this got snagged as part of some copy/paste operation. Did you maybe copy the template from the help viewer? Or copy output from some other input you had involving TextCell? A TextCell which is truly empty ought to disappear on its own unless it was created by evaluating TextCell[]. It also wouldn't go away if it had spaces in it. Sincerely, John Fultz jfultz at wolfram.com User Interface Group Wolfram Research, Inc. Thank you. I may have done one of those things, but didn't TextCell anywhere. Perhaps, Print[] is related? And also, I guess my question is - is it possible to make a TextCell visible? Like set it's background to red or border to another color? Thanks again, Sam