Oh, just saw Henry's response and he interpreted your question differently.  

If you're not typing these strings in, then what is the source?  And what is 
processing them (is it ;: ? if it's ". there's more to worry about than proper 
quoting).

Anyway, if the strings are coming from e.g. a file and the trouble is with 
parsing them using ;: (instead of evaluating them in the immex session), then 
you could try something along the lines of  (#~ 2 * '''' = ]) y  (i.e. double 
singleton quotes).

-Dan

Please excuse typos; composed on a handheld device.

-----Original Message-----
From: Dan Bron <[email protected]>
Sender: [email protected]
Date: Sat, 11 Feb 2012 14:05:16 
To: Programming forum<[email protected]>
Reply-To: Programming forum <[email protected]>
Subject: Re: [Jprogramming] quote problem

Unlike C, where \ introduces an escape sequence within string liberals, in J, 
the only special character in a literal is ' (single quote).

So, to embed quotes in strings, double them up:   a. i. '(`''3'   .  Of course, 
recursively embedded quotes need quadrupling, octupling, etc (eg 'he said ''she 
said ''''yes'''', but she lied'', if you can believe that').

The syntax error in your first example is due to the juxtaposition of two 
nouns, the string  '(`'  and the number 3 .

-Dan


On Feb 11, 2012, at 1:04 PM, "R.E. Boss" <[email protected]> wrote:

> If I want to process an arbitrary string, I may encounter a string which
> might give a "syntax error" or an "open quote" message.
> 
> How can I detect such a situation and how can I repair the given string?
> 
> 
> 
>   a. i. '(`'3
> 
> |syntax error
> 
> |   a.    i.'(`'3
> 
> 
> 
>   a. i. '(`'3'
> 
> |open quote
> 
> |      a.i.'(`'3'
> 
> |               ^
> 
> 
> 
> 
> 
> R.E. Boss
> 
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
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