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1500 questions
169
votes
10 answers

How do I reload a file in a buffer?

I usually work on files which are updated in the file system via version control. What's a quick way to reload a file without having to C-x C-f the file again and getting asked if I want to reload it?
Fernando Briano
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135
votes
4 answers

What are the practical differences between the various Emacs Package Repositories?

I notice that there are several different repositories that often contain the same software. Why would I want to prefer: GNU ELPA Marmalade MELPA over the others? Since any one repository does not contain all the packages that I want, is it a…
Eric Brown
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123
votes
13 answers

How to switch between windows quickly?

How do I switch between windows quickly? I often have multiple windows open and need to switch between them. Right now, I use C-x o to get to the one I want. Is there a more efficient workflow available for this?
Sibi
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123
votes
6 answers

Are there any advantages to using ~/.emacs.d/init.el instead of ~/.emacs?

I've normally used ~/.emacs for my config file, but I've noticed others using ~/.emacs.d/init.el. Are there advantages to the init.el location? Any disadvantages?
Larry Coleman
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118
votes
3 answers

How to merge Git conflicts in Emacs

My recent Git merge has resulted in a large number of conflicts. My current approach is to search for the next occurence of '<<<' and then perform the merge by standard text editing. Question: is there a way Emacs can support merging using the…
Beginner
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113
votes
3 answers

How to Restore File System Access in macOS Catalina

I updated to macOS Catalina which requires the user through pop-ups to allow any app trying to access the file system for the first time. No such pop-up is appearing for Emacs. Running the script shared…
wsaleem
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113
votes
9 answers

How can I get a ruler at column 80?

As a programmer, I want to see a ruler at a specific column (usually 80), both so I see when I cross that column, but also to see how close I am getting to it so I can reformat my code early. The options I have found so far are all not achieving…
Jorgen Schäfer
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109
votes
5 answers

What is the difference between Aquamacs and other Mac versions of Emacs?

Macintosh users have several choices of pre-built Emacs. I am aware of the following versions: YAMAMOTO Mitsuharu's Emacs Mac Port David Caldwell's Emacs for Mac OS X Vincent Goulet's Emacs Modified for macOS David Reitter's Aquamacs Some…
Eric Brown
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108
votes
12 answers

How do I prevent extremely long lines making Emacs slow?

I see hugely varied performance depending on how many newlines there are in the file I'm visiting. Here's an example. I have two JSON files: $ wget…
Wilfred Hughes
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107
votes
4 answers

How do I get a fancier mode line that uses solid colors and triangles?

People occasionally post screenshots with modelines that have solid colors and triangles: How do I replicate this effect?
Tikhon Jelvis
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101
votes
7 answers

Quickly insert source blocks in org mode

org-mode has the ability to render source code, with blocks of the following syntax: #+NAME: #+BEGIN_SRC
#+END_SRC Is there an existing command to quickly insert these blocks in org-mode,…
Matthew Piziak
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99
votes
6 answers

Reading and writing email with emacs

How can we use emacs to read and write email? This question is intended to provide a canonical landing point for users wanting to deal with email using emacs. Please post only one package/solution per answer, with as much details as you can.…
T. Verron
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97
votes
5 answers

Edit file with super-user rights

When you have to edit system files, it's an usual situation that you launched Emacs with a normal user before, so the file will be write-protected. What can I do to gain root privileges? I mean something like M-x sudo from dired. I don't want to…
smonff
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93
votes
6 answers

How to maximize my Emacs frame on start-up?

Is there a way to maximize my window on start-up? Currently, I hit Control++Up on my keyboard but it is very bothersome to do that every time. I am using Emacs 24.4 on Ubuntu 12.04.
programking
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89
votes
4 answers

Advantages of setting variables with setq instead of custom.el?

I see a lot of people (extension authors and others) give configuration examples with setq: (setq foo 'bar) These parameters are often defined with defcustom, making them available for customization through custom.el. I typically use custom.el to…
J David Smith
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