Posts categorized in ‘emacs’

A handy flow-chart if you are confused about when commits happen to Org maint branch vs master branch, what ends up in the Elpa version of Org, and so on.

Using field-formatters to format results of Org table formulae.

    Huh? 😕

Well, a mechanic usually wouldn’t give you a time estimate in seconds, but a tool I am using prints something like this at the end:

The simulation took 54227.9 seconds in CPU time.

That triggered me to write a “little” script to convert seconds to human time i.e. time in days, hours, minutes and seconds.

Ever wondered how to show L^aT_eX in HTML or a Hugo blog post exported from Org?

I never quite liked the trend to have upper-cased keywords in Org documents, like #+TITLE.

So it was a pleasure to see that trend start changing in this Org commit.. so that that same keyword would now be written as #+title.

The Org and Worg git repos can be committed to only via ssh protocol (and not https), and for technical reasons, I cannot commit to those repos via ssh from my primary development machine. So I ended up with a flow that involves pushing commits to those repos using my Nexus 6p phone.

Magit is how I git, and I love to primarily work from the ∗magit-log∗ buffer (M-x magit-status, l b). But the default column widths were not optimal on a Nexus 6p 5.7" screen. And that’s what inspired this tweak, which looks great on a regular desktop monitor too.

<2018-02-20 Tue>

Refactor the code using more canonical methods.

<2018-01-03 Wed>

Update the Org repo links as per the announcement on Org mailing list on <2017-12-28 Thu>.

I am assuming that you already know what Org or org-mode is and that’s why you are here.

You would want to build Org from its development branch (master branch) to get the latest and greatest goodies plus bug fixes! Go through the ORG-NEWS file to read about the new features.

If you like what you see there, here are the steps for installing the development version of Org.

I use emacs – with a server¹ and client setup – so that I can quickly open new files in it using emacsclient. My typical setup is to have xterm + tmux on one monitor and a single emacs(client) frame on another. But there are times when I do not want to shift focus from one monitor to another, like when I just need to review some log file. So I started using an alias to emacs -nw -Q to quickly open log files, review, filter, and C-x C-c.

Of course, that’s not where this post ends. An alias was no longer adequate to do what I wanted it to do more ..

Using emacsclient instead of the emacs binary is a very useful technique to prevent loading emacs from scratch each time you open a new file. That technique is useful on Windows too. But for this to work on Windows, we need some more elisp and Windows environment variable configuration than just the below code,

(require 'server)
;; Start a server if (server-running-p) does not return t (e.g. if it
;; returns nil or :other)
(or (eq (server-running-p) t)
    (server-start))

<2017-09-19 Tue>

Updated modi/ediff-dwim to the latest revision in my config.

In almost all of my ediff use cases, I would have windows open side-by-side in a frame, and then I would want to do a diff between the two using ediff-buffers.

But emacs doesn’t know that I obviously want to diff those two side-by-side buffers! So it always asks me to select the buffers to be diffed. The same problem is when using ediff-files too.

So I came up with the following helper function to pick the correct ediff command.

In Magit buffer *magit: ..*,

• Hit x
• Select origin/master

I am in the process of converting traditional verilog test benches to SystemVerilog UVM test benches. As per the UVM methodology, it is recommended to use `uvm_info instead of $display statements so that the info statement encodes a Message ID and Message Verbosity along with the message required to be printed.

I won’t go in more detail about UVM and verilog as this post is about how I can save a macro that I use very frequently into an elisp function.

Lately I was having an issue in the org to html conversion where the newline characters got appended with funky unicode characters.

Full detail is in this reddit post I started.

At times you might need your org exported pdf to have the exact font rendering as generated by a snippet of LaTeX code. To do that, wrap that code inbetween the \( and \) delimiters.

Set the buffer major mode to org-mode. If the file extension is a .org, that major mode would be set automatically by emacs.

Follow the below steps to create a table ..

This posts explain how the emacs in-built query-replace-regexp command can be used to convert upper-cased strings to lower case.

I have a couple of theme packages installed on my emacs but I would like to assign a default theme.

I set the zenburn theme via a function zenburn. I set the leuven theme via another function leuven. But in my emacs startup I didn’t want to hard-code either of these function and thus arose the need to set a variable to one of these functions.

Update (2017/02/23) — Now I use GNU Global with Universal Ctags as back-end to generate the tag files. In emacs, I use the ggtags package – [config].

This post still has value if you are interesting in configuring ctags only.

This posts shows how to set up ctags to parse SystemVerilog code and how to access that tag database in emacs.