Re: automatic new-line after 80 columns

[Rodrigo Canellas <rodrigo.canellas@tqtvd.com>]

Em Wednesday 18 February 2009 14:23:41 B. T. Raven escreveu:
> Rodrigo Canellas wrote:
> > Em Tuesday 17 February 2009 19:21:10 B. T. Raven escreveu:
> >> Rodrigo Canellas wrote:
> >>> Hi,
> >>>
> >>> I really can not find how to set 'emacs' to add a new-line when the line reaches the 80th column. 
> >>>
> >>> In 'ccmode', I set it fot the comments, but I would like to define for C++ code as well.
> >>>
> >>> Can anyone help me?
> >>>
> >>> Thanks a lot!
> >>>
> >>>
> >>>
> >> How does what you want differ from the behavior you see if you type this 
> >> in a buffer:
> >>
> >> C-u 80 C-x f C-u 1 M-x auto-fill-mode
> >>
> >> ??
> >> I think this is a minor mode that works with most programming languages.
> >>
> >> Ed
> >>
> > 
> > I created a file '/var/tmp/t.cpp'.
> > Then when I typed 'C-u 80 C-x f', 'emacs' said 'Fill column set to 80 (was 70)'
> > And when I typed 'C-u 1 M-x auto-fill-mode', it did not say anything.
> 
> You should see the word "Fill" added to the mode line.
> > 
> > I typed this:
> > #include <iostream>
> > 
> > 
> > void function_very_very_very_big_but_i_mean_really_big ( ) {
> >     {
> > 	{
> > 	    {
> > 		{
> > 		    {
> > 			{
> > 			    {
> > 				{
> > 				    {
> > 					{
> > 					    {
> > 						{
> > 						    {
> > 							{
> > 							    {
> > 								object_a = fc_abc( ) ;
> > 
> > 
> > Here I expected it would change to:
> > 
> > void function_very_very_very_big_but_i_mean_really_big ( ) {
> >     {
> > 	{
> > 	    {
> > 		{
> > 		    {
> > 			{
> > 			    {
> > 				{
> > 				    {
> > 					{
> > 					    {
> > 						{
> > 						    {
> > 							{
> > 							    {
> > 								object_a = 
> >                                                                       fc_abc( ) ;
> > 
> > 
> > 
> > I mean, to respect  the limit of 80 bytes per line, 'emacs' should insert a new-line after the '='.
> > 
> > Any ideas?
> 
> I copy-pasted the above into an Emacs buffer, enabled column-mode, and 
> didn't see any lines longer than 78 characters. Auto-fill just breaks 
> the line automatically at the word boundary at or just before the 
> fill-width character.
> 
> Type this:
> 
> Now is the time for every good man to come to the aid of every good man who
> types
> 
> and it should have broken before the word "types."
> 
> The above works in a lisp buffer but not in a new one I made (junk.cpp). 
> Maybe its working depends on c++ syntax. Did you try menu C++ > Toggle > 
> Auto newline?
> 

I  see the word 'Fill' in the mode line. I typed a line more than 80 bytes long in '*scratch*', and 'emacs' added a new line for me. 
But when I type in a C++ buffer it does no work. I guess I have to do what Tyler suggested, altough I have no idea how... 

Thanks anyway!


-- 
Rodrigo Canellas
Software Developer
Digital TV Products
+55 21 3147-3000/8675
rodrigo.canellas@tqtvd.com
www.tqtvd.com 
TQTVD Software

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