delta: 🐛 `--show-themes` errs with `Pattern not found (press RETURN)`

git --no-pager diff SQUASHED^^^^ SQUASHED^^^ 

diff --git a/textplain/blockTreeParser.ts b/textplain/blockTreeParser.ts
index 9e2f3ac..228cac3 100644
--- a/textplain/blockTreeParser.ts
+++ b/textplain/blockTreeParser.ts
@@ -111,7 +111,7 @@ export class BlockTreeParser {
         this._parseFront = new ParseFront(src, this._irRoot)
     }
 
-    get currentContainer (): ir.Block {
+    get currentIRContainer (): ir.Block {
         return this._parseFront.curPContainer.irContainer
     }
 
@@ -127,7 +127,7 @@ export class BlockTreeParser {
             // uncomment and use this line to trigger the debugger at a certain line
             //if (this._parseFront.lineRemainingContent() === '- * * *\n') debugger
 
-            this.parseContainerContinuation()
+            this.parsePContainerContinuation()
 
             if (front.curLineResolved()) {
                 // continue
@@ -223,7 +223,7 @@ export class BlockTreeParser {
      * If lazy continuation is enabled, it sets `_curLazyContainer` as
      * appropriate.
      */
-    parseContainerContinuation (): void {
+    parsePContainerContinuation (): void {
         const line = this._parseFront.curLine
 
         // match (non-lazy) continuing containers
@@ -361,7 +361,7 @@ export class BlockTreeParser {
             console.log(`new chunk: style=${chunkStyle.name}  ire=${(chunkStyle.irNode.type)}`);
             (result.irBlock.source as ptss.Block).lineStart = firstLine.num;
             (result.irBlock.source as ptss.Block).lineEnd = result.endLine.num
-            appendBlockContent(this.currentContainer, result.irBlock)
+            appendBlockContent(this.currentIRContainer, result.irBlock)
         }
         if (result.irRef) {
             console.log('new ref:', result.irRef)
@@ -392,7 +392,7 @@ export class BlockTreeParser {
         console.log(`new container: style=${containerStyle.name}  ire=${containerStyle.irNode.type}`);
         (result.irBlock.source as ptss.Block).lineStart = firstLine.num;
         (result.irBlock.source as ptss.Block).lineEnd = result.endLine.num
-        appendBlockContent(this.currentContainer, result.irBlock)
+        appendBlockContent(this.currentIRContainer, result.irBlock)
 
         if (result.irRef) {
             console.log('new ref:', result.irRef)
@@ -548,7 +548,7 @@ export class BlockTreeParser {
 
         console.log(`contentIndent:${contentIndent} offset:${line.ptr}`)
 
-        let irList = this.currentContainer.lastBodyBlock
+        let irList = this.currentIRContainer.lastBodyBlock
         if (!irList || irList.type != 'list' || !ptss.continuesList(irList, listOrdered, bulletChar, delimiter)) {
             const ptList = new ptss.Block(listStyle)
             ptList.listBulletChar = bulletChar
@@ -566,7 +566,7 @@ export class BlockTreeParser {
             irList.hints['commonmark.list.tight'] = true
 
             console.log(`starting new List: ordered:${listOrdered} bullet:${bulletChar} delim:${delimiter} start:${startNum}`)
-            appendBlockContent(this.currentContainer, irList)
+            appendBlockContent(this.currentIRContainer, irList)
         } else {
             console.log('adding to existing list')
 
@@ -574,11 +574,11 @@ export class BlockTreeParser {
             //  as a full fledged container in the ContainerStack. If
             //  it were, this logic would be taken care of in the normal
             //  this._parseFront.appendBlockContent call.
-            if ((this.currentContainer.source as ptss.Block).lastLineBlank) {
+            if ((this.currentIRContainer.source as ptss.Block).lastLineBlank) {
                 console.log('  set commonmark.list.tight to FALSE for list starting on line',
-                    (this.currentContainer.source as ptss.Block).lineStart)
+                    (this.currentIRContainer.source as ptss.Block).lineStart)
                 irList.hints['commonmark.list.tight'] = false;
-                (this.currentContainer.source as ptss.Block).lastLineBlank = false
+                (this.currentIRContainer.source as ptss.Block).lastLineBlank = false
             }
         }
 
@@ -622,7 +622,7 @@ export class BlockTreeParser {
 
         (result.irBlock.source as ptss.Block).lineStart = firstLine.num;
         (result.irBlock.source as ptss.Block).lineEnd = result.endLine.num
-        appendBlockContent(this.currentContainer, result.irBlock)
+        appendBlockContent(this.currentIRContainer, result.irBlock)
 
         // mark line resolved
         front.curLineConsume()