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How to make a buffer read only in Emacs?
It is bound to C-x C-q. (read-only-mode &optional ARG) Change whether the current buffer is read-only. With prefix argument ARG, make the buffer read-only if ARG is positive, otherwise make it writable. If buffer is read-only and `view-read-only’ is non-nil, enter view mode.
Can a read only buffer be modified in Linux?
The buffer is read-only if this variable is non- nil. However, characters that have the inhibit-read-only text property can still be modified. See inhibit-read-only . If this variable is non- nil, then read-only buffers and, depending on the actual value, some or all read-only characters may be modified.
What does it mean when a buffer is read only?
A buffer visiting a write-protected file is normally read-only. Here, the purpose is to inform the user that editing the buffer with the aim of saving it in the file may be futile or undesirable. The user who wants to change the buffer text despite this can do so after clearing the read-only flag with C-x C-q .
When to use with-temp-buffer in Elisp?
Note: most of the time, you should just use with-temp-buffer to create new buffers. Because that saves you code of creating buffer, switching to it, do something, possibly close it, and restore (switch back) to the buffer that was current.
How to change the file permission in Emacs?
To change file permissions, you can run dired on the file’s directory ( C-x d ), search for the file by C-s and use M to change its mode. If the workflow requires to change the file permission of the buffer repeatedly, then having a custom function would help like the following.
Is there a way to make a buffer read only?
If the file is now writable, the buffer will no longer be read-only. Alternatively, type C-x C-q (read-only-mode). This makes the buffer no longer read-only. You can edit and even save, but you’ll get a confirmation prompt asking whether you want to overwrite the read-only file.