From 44d7f339f5c6ffe493476fc45dfb2c664c5f4f40 Mon Sep 17 00:00:00 2001
From: Kjell Tore Guttormsen <hello@fromaitochitta.com>
Date: Mon, 4 May 2026 20:32:06 +0200
Subject: [PATCH] feat(tally): wire regex counting path in main with
 invalid-regex exit-2

Step 2 of plan.md (Spor B B3 pipeline run). Wires the --regex/-r flag
into main(): when set, compileRegex(pattern) is used and the count is
text.match(re).length. Invalid regex exits 2 via the existing fail()
helper. JSON output now includes flags.regex so consumers can tell the
mode apart. Baseline tests remain green; -i/--ignore-case has no effect
when --regex is set (out of brief scope).

Verify covered: SC #1 (any position), SC #2 (-r short form), SC #3
(regex semantics differ), SC #4 (invalid exits 2), SC #5 (JSON regex),
SC #6 (byte-identical baseline).

[skip-docs]
---
 .../ultraplan-local/examples/02-real-cli/tally.mjs | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/plugins/ultraplan-local/examples/02-real-cli/tally.mjs b/plugins/ultraplan-local/examples/02-real-cli/tally.mjs
index f63719a..8192829 100755
--- a/plugins/ultraplan-local/examples/02-real-cli/tally.mjs
+++ b/plugins/ultraplan-local/examples/02-real-cli/tally.mjs
@@ -70,13 +70,19 @@ function main() {
     process.stderr.write(`tally: ${what}: ${file}\n`);
     process.exit(1);
   }
-  const count = flags.lines
-    ? countLines(text, pattern, flags.ignoreCase)
-    : countOccurrences(text, pattern, flags.ignoreCase);
+  let count;
+  if (flags.regex) {
+    const re = compileRegex(pattern);
+    count = (text.match(re) || []).length;
+  } else if (flags.lines) {
+    count = countLines(text, pattern, flags.ignoreCase);
+  } else {
+    count = countOccurrences(text, pattern, flags.ignoreCase);
+  }
   if (flags.json) {
     process.stdout.write(JSON.stringify({
       pattern, file, count,
-      flags: { json: flags.json, ignoreCase: flags.ignoreCase, lines: flags.lines },
+      flags: { json: flags.json, ignoreCase: flags.ignoreCase, lines: flags.lines, regex: flags.regex },
     }) + '\n');
   } else {
     process.stdout.write(count + '\n');