docgen: fix #14448 show @@ as .. in href text (#14451)

compiler/docgen.nim

@@ -100,7 +100,7 @@ proc presentationPath*(conf: ConfigRef, file: AbsoluteFile, isTitle = false): Re
   if isTitle:
     result = result.string.nativeToUnix.RelativeFile
   else:
-    result = result.string.replace("..", "@@").RelativeFile ## refs #13223
+    result = result.string.replace("..", dotdotMangle).RelativeFile
   doAssert not result.isEmpty
   doAssert not isAbsolute(result.string)
 
@@ -926,7 +926,7 @@ proc traceDeps(d: PDoc, it: PNode) =
     if d.section[k] != nil: d.section[k].add(", ")
     dispA(d.conf, d.section[k],
           "<a class=\"reference external\" href=\"$2\">$1</a>",
-          "$1", [rope esc(d.target, changeFileExt(external, "")),
+          "$1", [rope esc(d.target, external.prettyLink),
           rope changeFileExt(external, "html")])
 
 proc exportSym(d: PDoc; s: PSym) =
@@ -936,7 +936,7 @@ proc exportSym(d: PDoc; s: PSym) =
     if d.section[k] != nil: d.section[k].add(", ")
     dispA(d.conf, d.section[k],
           "<a class=\"reference external\" href=\"$2\">$1</a>",
-          "$1", [rope esc(d.target, changeFileExt(external, "")),
+          "$1", [rope esc(d.target, external.prettyLink),
           rope changeFileExt(external, "html")])
   elif s.kind != skModule and s.owner != nil:
     let module = originatingModule(s)

lib/packages/docutils/rstgen.nim

@@ -78,6 +78,11 @@ type
     testCmd: string
     status: int
 
+const dotdotMangle* = "@@"  ## refs #13223
+
+proc prettyLink*(file: string): string =
+  changeFileExt(file, "").replace(dotdotMangle, "..")
+
 proc init(p: var CodeBlockParams) =
   ## Default initialisation of CodeBlockParams to sane values.
   p.startLine = 1
@@ -574,7 +579,7 @@ proc generateModuleJumps(modules: seq[string]): string =
 
   var chunks: seq[string] = @[]
   for name in modules:
-    chunks.add("<a href=\"" & name & ".html\">" & name & "</a>")
+    chunks.add("<a href=\"$1.html\">$2</a>" % [name, name.prettyLink])
 
   result.add(chunks.join(", ") & ".<br/>")