A quoted name that runs on into a title; .xNNN/.zNNN volumes

"lois 1258 Billy Joel - Extremes.part01.rar lois 1258 Billy Joel - Extremes ",
"GrooveCoverage.part26.rarGrooveCoveragebestof", "Goga Sekulic.part134.rar -
Goga Sekulic - …": the stem kept the title, and each part was a release of its
own (lois, CPP, DieViper, Maveri, tigra: ~2,400 files). runOn cuts the name
after its archive extension when a space, a dash or the name's own start
follows. And three-digit .x/.z volumes ("Reply 987986177631730.x004"),
not .x264/.x265.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

lib/release/identity.ts

@@ -51,7 +51,8 @@ export function fileStem(name: string): string {
   // Old-style rar volumes after .r99 ("BD_NoTHing018.s41", "….s00", ".t91", ".v81"): only as the file's own extension, in
   // lower case, so a season ("show.s01.rar", "Show.S01") stays. Split zip volumes (".z18"), and .xNN but not the builds
   // ".x32", ".x64", ".x86" ("Licence 700790900887990.z18", "….x31"; "….v1.0.142.x64" stays).
-  let stem = name.trim().replace(/\.(?:[s-vz]\d{2}|x(?!32$|64$|86$)\d{2})$/, '')
+  // Also three digits ("Reply 987986177631730.x004"), but not ".x264", ".x265".
+  let stem = name.trim().replace(/\.(?:[s-v]\d{2}|z\d{2,3}|x(?!(?:32|64|86|264|265)$)\d{2,3})$/, '')
   let changed = true
   while (changed) {
     changed = false
@@ -291,6 +292,26 @@ export function randomPoster(from: string): boolean {
   return looksRandom((at === -1 ? address : address.slice(0, at)).replace(/[-_.]/g, ''))
 }
 
+/** An archive's or par2's extension, where a name that runs on into a title is cut (runOn). */
+const RUN_ON = /\.(?:part\d+\.rar|vol\d+[+-]\d+\.par2|par2|rar|r\d{2,3}|7z(?:\.\d{3})?|zip|nzb|nfo|sfv)/gi
+
+/**
+ * A quoted name that runs on past its extension into a title ("lois 1258 Billy Joel - Extremes.part01.rar lois 1258 Billy
+ * Joel - Extremes ", "GrooveCoverage.part26.rarGrooveCoveragebestof", "Goga Sekulic.part134.rar - Goga Sekulic - …": each
+ * part a release of its own): the name up to that extension, when a space or a dash follows it, or the name's own start.
+ */
+export function runOn(name: string): string {
+  const head = name.slice(0, 4).toLowerCase()
+  const ascii = /^[\x00-\x7f]{4}$/.test(head)
+  for (const m of name.matchAll(RUN_ON)) {
+    const end = m.index + m[0].length
+    const rest = name.slice(end)
+    if (rest.length === 0) return name
+    if (/^\s|^\s*-/.test(rest) || (ascii && rest.slice(0, 4).toLowerCase() === head)) return name.slice(0, end)
+  }
+  return name
+}
+
 /** The subject without a number after the file's unquoted name at its end (" - 28": a size in kB). */
 export function sizeAfterName(subject: string, name: string): string {
   const end = subject.trimEnd()
@@ -305,7 +326,7 @@ export function releaseIdentity(input: ReleaseInput): ReleaseIdentity | null {
   const counter = /\[(\d+)\/(\d+)\]/.exec(input.subject)
   // The post rule's key takes the [i/M] total (as when the catalog started); the release's file total any counter's.
   const postTotal = counter && !brokenTotal(counter[1], counter[2]) ? Number.parseInt(counter[2], 10) : undefined
-  const stem = fileStem(input.name)
+  const stem = fileStem(runOn(input.name))
 
   if (input.weak) {
     // Obfuscating posters randomise the poster per article; a real filename

lib/release/index.ts

@@ -1,5 +1,5 @@
 /**
  * Grouping of files into releases (downloads), independent of AdonisJS.
  */
-export { releaseIdentity, par2ReleaseIdentity, par2ReleaseName, rarReleaseIdentity, isGenericName, fileStem, sizeAfterName, subjectRemainder, namesRelease, isPostToken, type ReleaseIdentity, type ReleaseInput } from './identity.js'
+export { releaseIdentity, par2ReleaseIdentity, par2ReleaseName, rarReleaseIdentity, isGenericName, fileStem, sizeAfterName, runOn, subjectRemainder, namesRelease, isPostToken, type ReleaseIdentity, type ReleaseInput } from './identity.js'
 export { looksRandom } from './random.js'