Card: document bug fixes; update counts to 54,803

README.md

@@ -47,8 +47,8 @@ ds = load_dataset("Frost2o24/bash-instruct-II-55k", split="train")
 
 | Metric | Value |
 |---|---|
-| Rows | **54,957** |
-| Distinct requests (`variant_group`s) | 45,150 |
+| Rows | **54,803** |
+| Distinct requests (`variant_group`s) | 45,142 |
 | `single` / `pipeline` / `script` | **40% / 35% / 25%** (exact) |
 | Distinct primary utilities | 183 |
 | `bash -n` valid | **100%** (0 syntax errors) |
@@ -122,7 +122,7 @@ jq -r '.utility' bash_dataset.jsonl | sort | uniq -c | sort -rn | head
 
 Three layers, in increasing strength:
 
-1. **`bash -n`** on every command — **0 / 54,957 syntax failures.**
+1. **`bash -n`** on every command — **0 / 54,803 syntax failures.**
 2. **shellcheck** (warning level) on a large sample — the few findings are style nits
    (`SC2010` `ls | grep`, `SC2164` `cd` without check).
 3. **Real execution** of the runnable subset in a disposable Linux sandbox (Debian 13
@@ -147,6 +147,23 @@ the filter). They were **removed** (55,000 → 54,957). What was cut:
 - `uname java`, `cp --parents f1 f2`, `lspci -s notes.xml`, `head 20 -3 file`
 - `echo -e "appdb" | tsort` — odd number of tokens
 
+A second pass (manual analysis + a stricter validator) caught two generator bugs and
+fixed them at the source (55,000 → **54,808**):
+
+- **Invalid long-form flag variant.** The answer-diversity generator applied a command's
+  short→long flag map across a whole pipeline, leaking e.g. grep's `-n → --line-number`
+  onto a downstream `tail -n` → `tail --line-number` (invalid). **146 rows removed**;
+  the generator now restricts substitution to the owning command's segment. (`tail --lines`
+  / `head --lines` are valid on GNU and were kept.) Also removed 3 `kill --CONT <name>`.
+- **`find -size` missing its comparison operator.** "larger than N" requests emitted bare
+  `-size N` (means *exactly* N). **113 rows repaired** to `-size +N`; the template now sets
+  `+`/`-` from the request direction.
+
+Re-running the hardened validator (now with `set -o pipefail` + a per-stage stderr scan for
+`invalid/unrecognized option`) then surfaced **5 more** malformed rows the old exit-status
+check had missed — `journalctl <service> <service>` (bare units need `-u`) — which were
+removed (→ **54,803**).
+
 ### Running the validator yourself (`validate.py`)
 
 Validation is **decoupled** from generation — nothing in `generate.py` calls it.
@@ -237,7 +254,7 @@ fidelity, `bash -n`, dedup — always hold.
 
 | File | What it is |
 |---|---|
-| `bash_dataset.jsonl` | The dataset — 54,957 rows (≈22 MB, no Git LFS needed). |
+| `bash_dataset.jsonl` | The dataset — 54,803 rows (≈22 MB, no Git LFS needed). |
 | `generate.py` | The generator (reproducible, resumable). |
 | `validate.py` | Standalone validator (strict + `--permissive` execution). |
 | `argcheck.py` | Argument-fidelity checker (generation gate + standalone auditor). |