Bug#370051: emacs-snapshot-x: html-helper mode only invoke on new files
Romain Francoise wrote: Ah, thanks Sven. I had missed the connection with `magic-mode-alist' in this report... I don't think this is a bug, `magic-mode-alist' *voluntarily* overrides `auto-mode-alist', it's mentioned in the docstring: ,[ C-h v magic-mode-alist RET ] | | Documentation: | Alist of buffer beginnings vs. corresponding major mode functions. | Each element looks like (REGEXP . FUNCTION). After visiting a file, | if REGEXP matches the text at the beginning of the buffer, | `normal-mode' will call FUNCTION rather than allowing `auto-mode-alist' | to decide the buffer's major mode. | | If FUNCTION is nil, then it is not called. (That is a way of saying | allow `auto-mode-alist' to decide for these files.) ` and in the manual: |Sometimes the major mode is determined from the way the file's text | begins. The variable `magic-mode-alist' controls this. Its value is a | list of elements of this form: | | (REGEXP . MODE-FUNCTION) | | This looks like an element of `auto-mode-alist', but it doesn't work | the same: this REGEXP is matched against the text at the start of the | buffer, not against the file name. `magic-mode-alist' takes priority | over `auto-mode-alist'. So the problem here is that html-helper-mode should replace the html-mode entry with one of its own in `magic-mode-alist', or just remove it to let `auto-mode-alist' decide. What do you think? Now that I learned about magic-mode-alist ;-), that sounds absolutely right. I think it's best for html-helper-mode to replace the html-mode entry in auto-mode-alist; that needs to be done in its startup file, /etc/emacs/site-start.d/50html-helper-mode.el. I'm afraid my lisp knowledge is too limited to come up with a patch. Would you like to write one? -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Bug#370051: emacs-snapshot-x: html-helper mode only invoke on new files
retitle 370051 html-helper-mode: Should add itself to `magic-mode-alist' too reassign 370051 html-helper-mode thanks, control Sven Joachim [EMAIL PROTECTED] writes: Now that I learned about magic-mode-alist ;-), that sounds absolutely right. [...] I'm afraid my lisp knowledge is too limited to come up with a patch. Would you like to write one? No, but that's something the html-helper-mode maintainer can do. I'm now reassigning this bug back. Thanks, -- ,''`. : :' :Romain Francoise [EMAIL PROTECTED] `. `' http://people.debian.org/~rfrancoise/ `- -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Bug#370051: emacs-snapshot-x: html-helper mode only invoke on new files
reassign 370051 emacs-snapshot thanks Romain Francoise wrote: reassign 370051 html-helper-mode quit Dan Jacobson [EMAIL PROTECTED] writes: $ emacs-snapshot file.html will invoke html-helper mode if the file didn't exist before. But it will invoke plain html mode if the file already exists! I can reproduce this with html-helper-mode, but not with any of the other modes started via the Debian startup scripts... which leads me to believe that the problem lies with html-helper-mode rather than Emacs. If it turns out not to be the case, feel free to reassign back. I think this is a bug in emacs-snapshot after all. The problem is that Emacs is a bit too clever: it sees the file's contents and, noticing that it is a HTML file (e.g., it has !DOCTYPE HTML ... or html as first text), decides to put it in html-mode, without even looking at auto-mode-alist which tells otherwise. To see this in detail: M-x debug-on-entry RET set-auto-mode RET open some HTML file, entering the debugger single-step through the function in the debugger with the 'd' key This should probably forwarded to emacs-pretest-bug, so that the Emacs maintainers can DTRT. Cheers, Sven -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Bug#370051: emacs-snapshot-x: html-helper mode only invoke on new files
Sven Joachim [EMAIL PROTECTED] writes: I think this is a bug in emacs-snapshot after all. The problem is that Emacs is a bit too clever: it sees the file's contents and, noticing that it is a HTML file (e.g., it has !DOCTYPE HTML ... or html as first text), decides to put it in html-mode, without even looking at auto-mode-alist which tells otherwise. Ah, thanks Sven. I had missed the connection with `magic-mode-alist' in this report... I don't think this is a bug, `magic-mode-alist' *voluntarily* overrides `auto-mode-alist', it's mentioned in the docstring: ,[ C-h v magic-mode-alist RET ] | | Documentation: | Alist of buffer beginnings vs. corresponding major mode functions. | Each element looks like (REGEXP . FUNCTION). After visiting a file, | if REGEXP matches the text at the beginning of the buffer, | `normal-mode' will call FUNCTION rather than allowing `auto-mode-alist' | to decide the buffer's major mode. | | If FUNCTION is nil, then it is not called. (That is a way of saying | allow `auto-mode-alist' to decide for these files.) ` and in the manual: |Sometimes the major mode is determined from the way the file's text | begins. The variable `magic-mode-alist' controls this. Its value is a | list of elements of this form: | | (REGEXP . MODE-FUNCTION) | | This looks like an element of `auto-mode-alist', but it doesn't work | the same: this REGEXP is matched against the text at the start of the | buffer, not against the file name. `magic-mode-alist' takes priority | over `auto-mode-alist'. So the problem here is that html-helper-mode should replace the html-mode entry with one of its own in `magic-mode-alist', or just remove it to let `auto-mode-alist' decide. What do you think? -- ,''`. : :' :Romain Francoise [EMAIL PROTECTED] `. `' http://people.debian.org/~rfrancoise/ `- -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Bug#370051: emacs-snapshot-x: html-helper mode only invoke on new files
Package: emacs-snapshot Version: 1:20060518-1 Severity: normal Big problem. $ emacs-snapshot file.html will invoke html-helper mode if the file didn't exist before. But it will invoke plain html mode if the file already exists! Had to do (fset 'html-mode 'html-helper-mode) getting Loading html-helper-mode (source)...done meddling with auto-mode-alist didn't help. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Bug#370051: emacs-snapshot-x: html-helper mode only invoke on new files
reassign 370051 html-helper-mode quit Dan Jacobson [EMAIL PROTECTED] writes: $ emacs-snapshot file.html will invoke html-helper mode if the file didn't exist before. But it will invoke plain html mode if the file already exists! I can reproduce this with html-helper-mode, but not with any of the other modes started via the Debian startup scripts... which leads me to believe that the problem lies with html-helper-mode rather than Emacs. If it turns out not to be the case, feel free to reassign back. -- ,''`. : :' :Romain Francoise [EMAIL PROTECTED] `. `' http://people.debian.org/~rfrancoise/ `- -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
