Update post

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
@@ -433,9 +433,11 @@ $ make test
 
 ## Bonus!: Issues We Ran Into Just Trying To Make This Post
 
-1. `$host$request_uri`
+### `$host$request_uri`
 
+::: filename-for-code-block
 `renderers/markdown.moon`
+:::
 
 ```moonscript
 dollar_temp = "0000sitegen_markdown00dollar0000"
@@ -458,4 +460,52 @@ $ make test
 from the sitegen markdown renderer. Which makes my renderer a copy with
 some additions.
 
-2. `$$ct`
+::: filename-for-code-block
+`spec/renderers_spec.moon`
+:::
+
+```moonscript
+import escape_cosmo, unescape_cosmo from require "renderers.markdown"
+
+it "escapes and unescapes adjacent cosmo selectors", ->
+ str = "$one$two"
+ escaped = escape_cosmo str
+ assert.same escaped,
+   "z000sitegen_markdown00dollar0000.1z000sitegen_markdown00dollar0000.2"
+ assert.same str, (unescape_cosmo escape_cosmo str)
+```
+
+### `$$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
+```