Aditya Mahajan wrote:
> <--- On Mar 28, Taco Hoekwater wrote --->
>
>
>> andrea valle wrote:
>>
>>> Dear all,
>>> It's a bit tiring to start many lines always with %.
>>> Is it possibile to have multiple line comments like in C
>>>
>>> \*
>>> comments here
>>> *\
>>>
>> \iffalse
>> comments here
>> \fi
>>
>
> Be careful with this. From the UK tex FAQ
>
> The simple \newcommand{\gobble}[1]{} and \iffalse ... \fi aren't
> really satisfactory (as a general solution) for comments, since the
> matter being skipped is nevertheless scanned by TeX, not always as you
> would expect. The scanning imposes restrictions on what you're allowed
> to skip; this may not be a problem in today's job, but could return to
> bite you tomorrow. For an example of surprises that may come to bite
> you, consider the following example (derived from real user
> experience):
>
> \iffalse % ignoring this bit
> consider what happens if we
> use \verb|\iftrue| -- a surprise
> \fi
>
> The \iftrue is spotted by TeX as it scans, ignoring the \verb command;
> so the \iffalse isn't terminated by the following \fi. Also, \gobble
> is pretty inefficient at consuming anything non-trivial, since all the
> matter to be skipped is copied to the argument stack before being
> ignored.
>
This one is pretty safe:
\startbuffer[comment]
bla
\startbuffer
bla \iftrue \startbuffer bla bla
bla \stopbuffer bla bla
\stopbuffer
bla
bla
\stopbuffer
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