Re: [Haskell-cafe] emacs haskellers: r-stripping files becomes popular
why care about trailing whitespace? On Nov 16, 2007 8:14 AM, Valery V. Vorotyntsev [EMAIL PROTECTED] wrote: Add the following lines to your ~/.emacs: --- BEGIN OF ELISP CODE --- ;(global-set-key (kbd f9 s) 'delete-trailing-whitespace) (defun delete-trailing-whitespace-if-confirmed () Delete all the trailing whitespace across the current buffer, asking user for confirmation. (if (and (save-excursion (goto-char (point-min)) (re-search-forward [[:space:]]$ nil t)) (y-or-n-p Delete trailing whitespace? )) (delete-trailing-whitespace))) (add-hook 'before-save-hook 'delete-trailing-whitespace-if-confirmed) --- END OF ELISP CODE --- Have fun! -- vvv ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] emacs haskellers: r-stripping files becomes popular
On Nov 24, 2007 10:55 PM, Conal Elliott [EMAIL PROTECTED] wrote: why care about trailing whitespace? Probably because it looks bad in darcs patch summaries (trailing whitespace -- little red dollar signs). Unless there's another reason I don't know about. -Brent ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] emacs haskellers: r-stripping files becomes popular
On 24 Nov 2007, at 9:09 PM, Brent Yorgey wrote: On Nov 24, 2007 10:55 PM, Conal Elliott [EMAIL PROTECTED] wrote: why care about trailing whitespace? Probably because it looks bad in darcs patch summaries (trailing whitespace -- little red dollar signs). Unless there's another reason I don't know about. It breaks C-e. (Irreparably, of course). jcc ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] emacs haskellers: r-stripping files becomes popular
Additionally, I find this to be helpful for keeping out trailing whitespace: ;; Highlight trailing whitespace in haskell files (add-hook 'haskell-mode-hook '(lambda () (setq show-trailing-whitespace t))) Cheers, -Greg Heartsfield On Fri, Nov 16, 2007 at 06:14:57PM +0200, Valery V. Vorotyntsev wrote: Add the following lines to your ~/.emacs: --- BEGIN OF ELISP CODE --- ;(global-set-key (kbd f9 s) 'delete-trailing-whitespace) (defun delete-trailing-whitespace-if-confirmed () Delete all the trailing whitespace across the current buffer, asking user for confirmation. (if (and (save-excursion (goto-char (point-min)) (re-search-forward [[:space:]]$ nil t)) (y-or-n-p Delete trailing whitespace? )) (delete-trailing-whitespace))) (add-hook 'before-save-hook 'delete-trailing-whitespace-if-confirmed) --- END OF ELISP CODE --- Have fun! -- vvv ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] emacs haskellers: r-stripping files becomes popular
On 11/16/07, Denis Bueno [EMAIL PROTECTED] wrote: For one thing, if you happen to write code shared with other people who do not use this hook, then you may end up causing *huge* numbers of spurious differences in diff(1) output. There may be an easy way to deal with this, but, it is a problem. Yes, you are right. That's why user is being asked for confirmation. And `diff -w' removes the noise, but still, yes, that can be a problem. :) -- vvv ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] emacs haskellers: r-stripping files becomes popular
On Nov 16, 2007 12:05 PM, Valery V. Vorotyntsev [EMAIL PROTECTED] wrote: On 11/16/07, Brent Yorgey [EMAIL PROTECTED] wrote: Nice! Is there a way to have this only run if the current buffer is in haskell-mode? I'd add it myself but I've not yet taken the plunge to being an elisp hacker. Try adding ``(eq major-mode 'haskell-mode)'' after the `and' .. .. but why would you tolerate whitespace in other modes? For one thing, if you happen to write code shared with other people who do not use this hook, then you may end up causing *huge* numbers of spurious differences in diff(1) output. There may be an easy way to deal with this, but, it is a problem. -- Denis ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] emacs haskellers: r-stripping files becomes popular
On Nov 16, 2007 11:14 AM, Valery V. Vorotyntsev [EMAIL PROTECTED] wrote: Add the following lines to your ~/.emacs: --- BEGIN OF ELISP CODE --- ;(global-set-key (kbd f9 s) 'delete-trailing-whitespace) (defun delete-trailing-whitespace-if-confirmed () Delete all the trailing whitespace across the current buffer, asking user for confirmation. (if (and (save-excursion (goto-char (point-min)) (re-search-forward [[:space:]]$ nil t)) (y-or-n-p Delete trailing whitespace? )) (delete-trailing-whitespace))) (add-hook 'before-save-hook 'delete-trailing-whitespace-if-confirmed) --- END OF ELISP CODE --- Nice! Is there a way to have this only run if the current buffer is in haskell-mode? I'd add it myself but I've not yet taken the plunge to being an elisp hacker. -Brent ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] emacs haskellers: r-stripping files becomes popular
On 11/16/07, Brent Yorgey [EMAIL PROTECTED] wrote: Nice! Is there a way to have this only run if the current buffer is in haskell-mode? I'd add it myself but I've not yet taken the plunge to being an elisp hacker. Try adding ``(eq major-mode 'haskell-mode)'' after the `and' .. .. but why would you tolerate whitespace in other modes? -- vvv ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
