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<h1 class="heading">n</h1>
<div class="posts">
<div class="post">
<div class="date">12/10 2019</div>
<a id="post-WPA_woes.md" class="post-link" onClick="showPost('WPA_woes.md')" >WPA Woes</a>
<div id="WPA_woes.md" class="post-text" style="display: none">
<p>I finally got around to installing Void GNU/Linux on my main
computer. Rolling release, non-systemd, need I say more?</p>
<p>As with all GNU/Linux distributions, wireless networks had
me in a fix. If you can see this post, it means I’ve managed
to get online. It turns out, <code>wpa_supplicant</code> was detecting the
wrong interface by default (does it ever select the right
one?). Let us fix that:</p>
<pre><code>$ sudo rm -r /var/service/wpa_supplicant
$ sudo killall dhcpcd
</code></pre>
<p>What is the right interface though?</p>
<pre><code>$ iw dev
...
Interface wlp2s0
...
</code></pre>
<p>Aha! Let us run <code>wpa_supplicant</code> on that interface, as a
background process:</p>
<pre><code>$ sudo wpa_supplicant -B -i wlp2s0 -c /etc/wpa_supplicant/wpa_supplicant.conf
$ sudo dhcpcd -B wlp2s0
$ ping google.com
PING ...
</code></pre>
<p>Yay! Make those changes perpetual by enabling the service:</p>
<pre><code>------------------------------------------------------
# Add these to /etc/wpa_supplicant/wpa_supplicant.conf
OPTS="-B"
WPA_INTERFACE="wlp2s0"
------------------------------------------------------
$ sudo ln -s /etc/sv/wpa_supplicant /var/service/
$ sudo ln -s /etc/sv/dhcpcd /var/service/
$ sudo sv restart wpa_supplicant
$ sudo sv restart dhcpcd
</code></pre>
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<div class="post">
<div class="date">07/08 2019</div>
<a id="post-bye_bye_BDFs.md" class="post-link" onClick="showPost('bye_bye_BDFs.md')" >Bye Bye BDFs</a>
<div id="bye_bye_BDFs.md" class="post-text" style="display: none">
<p>Glyph Bitmap Distribution Format is no more, as the creators of
<a href="https://pango.org">Pango</a>, one of the most widely used text rendering
libraries,
<a href="https://blogs.gnome.org/mclasen/2019/05/25/pango-future-directions/">announced</a>
their plans for Pango 1.44.</p>
<p>Until recently, Pango used FreeType to draw fonts. They will be moving over
to <a href="https://harfbuzz.org">Harfbuzz</a>, an evolution of FreeType.</p>
<p><em>Why?</em></p>
<p>In short, FreeType was hard to work with. It required complex logic, and
provided no advantage over Harfbuzz (other than being able to fetch
opentype metrics with ease).</p>
<p>Upgrading to Pango v1.44 will break your GTK applications (if you use a
<code>bdf</code>/<code>pcf</code> bitmap font). Harfbuzz <em>does</em> support bitmap-only OpenType fonts,
<code>otb</code>s. Convert your existing fonts over to <code>otb</code>s using
<a href="https://fontforge.github.io">FontForge</a>. It is to be noted that applications
such as <code>xterm</code> and <code>rxvt</code> use <code>xft</code> (X FreeType) to render fonts, and will
remain unaffected by the update.</p>
<p>Both <a href="https://github.com/nerdypepper/scientifica">scientifica</a> and
<a href="https://github.com/nerdypepper/curie">curie</a> will soon ship with bitmap-only
OpenType font formats.</p>
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<div class="post">
<div class="date">02/08 2019</div>
<a id="post-onivim_sucks.md" class="post-link" onClick="showPost('onivim_sucks.md')" >Onivim Sucks</a>
<div id="onivim_sucks.md" class="post-text" style="display: none">
<p><a href="https://v2.onivim.io">Onivim</a> is a ‘modern modal editor’, combining fancy
interface and language features with vim-style modal editing. What’s wrong you
ask?</p>
<p>Apart from <a href="https://github.com/onivim/oni2/issues/550">buggy syntax highlighting</a>,
<a href="https://github.com/onivim/oni2/issues/519">broken scrolling</a> and
<a href="https://github.com/onivim/oni2/issues?q=is%3Aissue+label%3A%22daily+editor+blocker%22+is%3Aopen">others</a>,
Onivim is <strong>proprietary</strong> software. It is licensed under a commercial
<a href="https://github.com/onivim/oni1/blob/master/Outrun-Labs-EULA-v1.1.md">end user agreement license</a>,
which prohibits redistribution in both object code and source code formats.</p>
<p>Onivim’s core editor logic (bits that belong to vim), have been separated from
the interface, into <a href="https://github.com/onivim/libvim">libvim</a>. libvim is
licensed under MIT, which means, this ‘extension’ of vim is perfectly in
adherence to <a href="http://vimdoc.sourceforge.net/htmldoc/uganda.html#license">vim’s license text</a>!
Outrun Labs are exploiting this loophole (distributing vim as a library) to
commercialize Onivim.</p>
<p>Onivim’s source code is available on <a href="https://github.com/onivim/oni2">GitHub</a>.
They do mention that the source code trickles down to the
<a href="https://github.com/onivim/oni2-mit">oni2-mit</a> repository, which (not yet) contains
MIT-licensed code, <strong>18 months</strong> after each commit to the original repository.</p>
<p>Want to contribute to Onivim? Don’t. They make a profit out of your contributions.
Currently, Onivim is priced at $19.99, ‘pre-alpha’ pricing which is 80% off the
final price! If you are on the lookout for an editor, I would suggest using
<a href="https://vim.org">Vim</a>, charity ware that actually works, and costs $100 lesser.</p>
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<div class="post">
<div class="date">31/07 2019</div>
<a id="post-bash_harder_with_vim.md" class="post-link" onClick="showPost('bash_harder_with_vim.md')" >Bash Harder With Vim</a>
<div id="bash_harder_with_vim.md" class="post-text" style="display: none">
<p>Bash is tricky, don’t let your editor get in your way. Here’s a couple of neat
additions you could make to your <code>vimrc</code> for a better shell programming
experience.</p>
<hr/>
<h4 id="Man%20pages%20inside%20vim">Man pages inside vim</h4>
<p>Source this script to get started: </p>
<pre><code>runtime ftplugin/man.vim
</code></pre>
<p>Now, you can open manpages inside vim with <code>:Man</code>! It adds nicer syntax highlighting
and the ability to jump around with <code>Ctrl-]</code> and <code>Ctrl-T</code>.</p>
<p>By default, the manpage is opened in a horizontal split, I prefer using a new tab:</p>
<pre><code>let g:ft_man_open_mode = 'tab'
</code></pre>
<hr/>
<h4 id="Scratchpad%20to%20test%20your%20commands">Scratchpad to test your commands</h4>
<p>I often test my <code>sed</code> substitutions, here is
a sample from the script used to generate this site: </p>
<pre><code># a substitution to convert snake_case to Title Case With Spaces
echo "$1" | sed -E -e "s/\..+$//g" -e "s/_(.)/ \u\1/g" -e "s/^(.)/\u\1/g"
</code></pre>
<p>Instead of dropping into a new shell, just test it out directly from vim!</p>
<ul>
<li><p>Yank the line into a register:</p>
<pre><code>yy
</code></pre></li>
<li><p>Paste it into the command-line window:</p>
<pre><code>q:p
</code></pre></li>
<li><p>Make edits as required:</p>
<pre><code>syntax off # previously run commands
edit index.html # in a buffer!
w | so %
!echo "new_post.md" | sed -E -e "s/\..+$//g" --snip--
^--- note the use of '!'
</code></pre></li>
<li><p>Hit enter with the cursor on the line containing your command!</p>
<pre><code>$ vim
New Post # output
Press ENTER or type command to continue
</code></pre></li>
</ul>
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<div class="post">
<div class="date">30/07 2019</div>
<a id="post-hold_position!.md" class="post-link" onClick="showPost('hold_position!.md')" >Hold Position!</a>
<div id="hold_position!.md" class="post-text" style="display: none">
<p>Often times, when I run a vim command that makes “big” changes to a file (a
macro or a <code>:vimgrep</code> command) I lose my original position and feel disoriented.</p>
<p><em>Save position with <code>winsaveview()</code>!</em></p>
<p>The <code>winsaveview()</code> command returns a <code>Dictionary</code> that contains information
about the view of the current window. This includes the cursor line number,
cursor coloumn, the top most line in the window and a couple of other values,
none of which concern us.</p>
<p>Before running our command (one that jumps around the buffer, a lot), we save
our view, and restore it once its done, with <code>winrestview</code>.</p>
<pre><code>let view = winsaveview()
s/\s\+$//gc " find and (confirm) replace trailing blanks
winrestview(view) " restore our original view!
</code></pre>
<p>It might seem a little overkill in the above example, just use “ (double
backticks) instead, but it comes in handy when you run your file through
heavier filtering.</p>
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<div class="post">
<div class="date">29/07 2019</div>
<a id="post-get_better_at_yanking_and_putting_in_vim.md" class="post-link" onClick="showPost('get_better_at_yanking_and_putting_in_vim.md')" >Get Better At Yanking And Putting In Vim</a>
<div id="get_better_at_yanking_and_putting_in_vim.md" class="post-text" style="display: none">
<ol start="1">
<li><p>reselecting previously selected text (i use this to fix botched selections):</p>
<pre><code>gv " :h gv for more
" you can use `o` in visual mode to go to the `Other` end of the selection
" use a motion to fix the selection
</code></pre></li>
<li><p>reselecting previously yanked text:</p>
<pre><code>`[v`]
`[ " marks the beginning of the previously yanked text :h `[
`] " marks the end :h `]
v " visual select everything in between
nnoremap gb `[v`] " "a quick map to perform the above
</code></pre></li>
<li><p>pasting and indenting text (in one go):</p>
<pre><code>]p " put (p) and adjust indent to current line
]P " put the text before the cursor (P) and adjust indent to current line
</code></pre></li>
</ol>
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