Renamed Portals.py to VarFunctions.py, and fixed bug where you cannot

use head or tail in a loop.

Backend/Embeds.py

@@ -10,8 +10,8 @@ from Core import ResolvePath
 from Explorer import ClassifyFile, GetDirectoryNoteInfo
 from Groups import GuestGroupName
 from Locks import IsPathAccessible
-from Portals import ResolvePortals
 from Preview import GetMimeType, ReadTextFile, TextFileTypes
+from VarFunctions import ResolvePortals
 
 
 DescriptionExcerptLength = 200

Backend/Main.py

@@ -51,7 +51,6 @@ from Locks import (
     RequirePathAccessible,
     SetLock,
 )
-from Portals import ResolvePortals
 from Preview import GetMimeType, ReadTextFile, StreamBinaryFile, TextFileTypes
 from Settings import (
     DefaultSettings,
@@ -77,6 +76,7 @@ from Users import (
     UserColourOptions,
     VerifyLogin,
 )
+from VarFunctions import ResolvePortals
 from pydantic import BaseModel
 
 

Backend/VarFunctions.py

@@ -24,6 +24,7 @@ LoopMarkerPattern = re.compile(
     r"\{(?P<LoopSource>children|siblings|parents)\s+%\s+(?P<LoopVar>[A-Za-z_][A-Za-z0-9_]*)\}"
     r"|\{(?P<CloseSource>children|siblings|parents)\s+%\}"
     r"|\{(?:(?P<LoopCrossPath>[^\s{}']+)\s+)?\*\*\*(?P<LoopCrossName>[^\s*{}]+)"
+    r"(?:\s+(?P<LoopCrossPipe>head|tail)\s+(?P<LoopCrossPipeCount>\d+))?"
     r"\s+%\s+(?P<LoopCrossVar>[A-Za-z_][A-Za-z0-9_]*)\}"
     r"|\{\*\*\*(?P<CloseCrossName>[^\s*{}]+)\s+%\}"
 )
@@ -192,7 +193,15 @@ def _ResolveLoops(
             PortalContent = _ResolveCrossFileReference(
                 RootName, RefererDirectory, Match.group("LoopCrossPath"), Key, Username, UserGroups
             )
-            Items = PortalContent.splitlines() if PortalContent is not None else []
+
+            if PortalContent is None:
+                Items = []
+            elif Match.group("LoopCrossPipe"):
+                Items = _SlicePipeLines(
+                    PortalContent, Match.group("LoopCrossPipe"), int(Match.group("LoopCrossPipeCount"))
+                )
+            else:
+                Items = PortalContent.splitlines()
 
         CloseMatch = _FindLoopClose(Matches, Index + 1, IsFixed, Key)
         BodyEnd = CloseMatch.start() if CloseMatch is not None else len(Content)
@@ -294,10 +303,13 @@ def _ResolveCrossFileReference(
     return _FindLocalDefinitions(Content).get(Name)
 
 
-def _ApplyPipe(Text: str, Mode: str, Count: int) -> str:
+def _SlicePipeLines(Text: str, Mode: str, Count: int) -> list[str]:
     Lines = Text.splitlines()
-    Selected = Lines[:Count] if Mode == "head" else Lines[-Count:] if Count > 0 else []
+    return Lines[:Count] if Mode == "head" else (Lines[-Count:] if Count > 0 else [])
-    return "\n".join(Selected)
+
+
+def _ApplyPipe(Text: str, Mode: str, Count: int) -> str:
+    return "\n".join(_SlicePipeLines(Text, Mode, Count))
 
 
 def _ResolveWholeFilePipe(