From 0cc8f183020e18723d83eb9175cd73c5aee27355 Mon Sep 17 00:00:00 2001
From: Catalin Constantin Mititiuc <webdevcat@proton.me>
Date: Fri, 27 Jun 2025 10:54:11 -0700
Subject: [PATCH] Update post

---
 .../2025-06-22-test-nginx-conf-directives.md  | 90 ++++++++++++++-----
 1 file changed, 70 insertions(+), 20 deletions(-)

diff --git a/posts/2025-06-22-test-nginx-conf-directives.md b/posts/2025-06-22-test-nginx-conf-directives.md
index 07f9336..aeb214a 100644
--- a/posts/2025-06-22-test-nginx-conf-directives.md
+++ b/posts/2025-06-22-test-nginx-conf-directives.md
@@ -387,7 +387,7 @@ Add a spec:
 
 ```moonscript
 describe "https://git.domain.abc", ->
-  it "reverse-proxy's request to a gitea unix socket", ->
+  it "reverse-proxy's a subdomain request to a unix socket", ->
     socket = fname: "unixstreamsrvr.moon", dir: "/run/gitea", owner: "nobody"
     basepath = debug.getinfo(1).short_src\match"^(.*)/[^/]*$" or "."
     seconds = 0.1
@@ -433,29 +433,79 @@ $ make test
 
 ## Bonus!: Issues We Ran Into Just Trying To Make This Post
 
-1. `$host$request_uri`
+### `$host$request_uri`
 
-    `renderers/markdown.moon`
+::: filename-for-code-block
+`renderers/markdown.moon`
+:::
 
-    ```moonscript
-    dollar_temp = "0000sitegen_markdown00dollar0000"
-    ```
+```moonscript
+dollar_temp = "0000sitegen_markdown00dollar0000"
+```
 
-    So, when two cosmo selectors had no space between them, it was ambiguous
-    to which selector the numbers belonged.
+So, when two cosmo selectors had no space between them, it was ambiguous
+to which selector the numbers belonged.
 
-    ```
-    0000sitegen_markdown00dollar0000.10000sitegen_markdown00dollar0000.2 
-    ```
+```
+0000sitegen_markdown00dollar0000.10000sitegen_markdown00dollar0000.2 
+```
 
-    Solution was to change the first `0` to a letter `z`:
+Solution was to change the first `0` to a letter `z`:
 
-    ```
-    z000sitegen_markdown00dollar0000.1z000sitegen_markdown00dollar0000.2 
-    ```
-    
-    Because `dollar_temp` is a private attribute, I had to copy every function
-    from the sitegen markdown renderer. Which makes my renderer a copy with
-    some additions.
+```
+z000sitegen_markdown00dollar0000.1z000sitegen_markdown00dollar0000.2 
+```
 
-2. `$$ct`
+Because `dollar_temp` is a private attribute, I had to copy every function
+from the sitegen markdown renderer. Which makes my renderer a copy with
+some additions.
+
+::: filename-for-code-block
+`spec/renderers_spec.moon`
+:::
+
+```moonscript
+import escape_cosmo, unescape_cosmo from require "renderers.markdown"
+
+it "escapes and unescapes adjacent cosmo selectors", ->
+ str = "$one$two"
+ escaped = escape_cosmo str
+ assert.same escaped,
+   "z000sitegen_markdown00dollar0000.1z000sitegen_markdown00dollar0000.2"
+ assert.same str, (unescape_cosmo escape_cosmo str)
+```
+
+### `$$ct`
+
+```
+z000sitegen_markdown00dollar0000.1
+```
+
+Because `.` is not a valid character for a variable name, when this string
+is syntax-highlighted, it gets split, like this:
+
+```
+<span>z000sitegen_markdown00dollar0000</span>.1
+```
+
+The string is then 'unescaped', but because the string got split by the
+closing `</span>` tag, it will no longer match the pattern and the
+'unescape' fails.
+
+The solution was to change the `.` in the dollar temp pattern to `_`, which is
+a valid character in a variable name. Update the `$one$two` spec escaped
+string.
+
+::: filename-for-code-block
+`spec/renderers_spec.moon`
+:::
+
+```moonscript
+it "escapes and unescapes double dollar signs", ->
+  out = flatten_html render [[
+```Makefile
+  $$name
+```]]
+
+  assert.same [[<div class="highlight"><pre><span></span><code><span class="py-w"></span><span class="py-nv">$$name</span></code></pre></div>]], out
+```