If keeptex is specified, forward that along to the individual files when cleaning up

Author: dragonstyle

src/format/pdf/format-pdf.ts

@@ -42,7 +42,7 @@ import { Format, FormatExtras, PandocFlags } from "../../config/types.ts";
 import { createFormat } from "../formats-shared.ts";
 
 import { RenderedFile, RenderServices } from "../../command/render/types.ts";
-import { ProjectContext } from "../../project/types.ts";
+import { ProjectConfig, ProjectContext } from "../../project/types.ts";
 import { BookExtension } from "../../project/types/book/book-shared.ts";
 
 import { readLines } from "io/buffer.ts";
@@ -88,6 +88,16 @@ export function latexFormat(displayName: string): Format {
       {
         extensions: {
           book: {
+            onSingleFilePreRender: (
+              format: Format,
+              _config?: ProjectConfig,
+            ) => {
+              // If we're targeting LaTeX output, be sure to keep
+              // the supporting files around (since we're not building
+              // them into a PDF)
+              format.render[kKeepTex] = true;
+              return format;
+            },
             formatOutputDirectory: () => {
               return "book-latex";
             },

src/project/types/book/book-render.ts

@@ -24,6 +24,7 @@ import {
   kDoi,
   kFormatLinks,
   kHideDescription,
+  kKeepTex,
   kNumberSections,
   kOutputExt,
   kOutputFile,
@@ -347,6 +348,10 @@ async function renderSingleFileBook(
 
   // cleanup step for each executed file
   files.forEach((file) => {
+    // Forward render cleanup options from parent format
+    file.recipe.format.render[kKeepTex] =
+      executedFile.recipe.format.render[kKeepTex];
+
     cleanupExecutedFile(
       file,
       join(project.dir, renderedFile.file),