掃旗

盡取命名空間之旗→錄→對照已記者→驗其全。probe-feature-flag-state 取樣，此則盡掃，且驗其終。

用

• campaign 中途→需可驗終止之據，非揣測「足矣」
• 命名空間繁（候選逾百）→取樣恐失要閘
• 須分報 DEFAULT-TRUE 與 DEFAULT-FALSE
• 多波文書化→每波之終須有定量
• 疑前 campaign 早終→須掃以證之

入

• 必：可讀之 binary 或 bundle
• 必：命名空間前綴（合成例：acme_*）
• 必：已記之集（campaign 至今所成之單）
• 可：閘讀函名（gate(...)、flag(...)、isEnabled(...)）→助步二
• 可：遙測/emit 函名→反向同理
• 可：前版掃出→以資差異

行

Step 1: Harvest All Strings Matching the Namespace Prefix

盡取合前綴之字串，不論其用。此步求廣，非分。

BUNDLE=/path/to/cli/bundle.js
PREFIX=acme_                       # synthetic placeholder

# Pull every quoted string starting with the prefix
grep -oE "\"${PREFIX}[a-zA-Z0-9_]+\"" "$BUNDLE" | sort -u > /tmp/sweep-candidates.txt
wc -l /tmp/sweep-candidates.txt    # unique candidate count

# Per-string occurrence count (gives a first hint at gate-call density)
grep -oE "\"${PREFIX}[a-zA-Z0-9_]+\"" "$BUNDLE" | sort | uniq -c | sort -rn > /tmp/sweep-occurrences.txt
head /tmp/sweep-occurrences.txt

得：去重之候選單與按頻排序之出現檔。頻甚高（≥10）→疑為閘；單見者→多為遙測事件名或靜態標籤。

敗：唯一數為 0→前綴誤（typo、邊界錯、harness 慣不符）。逾 5000→前綴過廣，宜縮之，否則錄不可治。

Step 2: Disambiguate Gate Calls from Telemetry from Static Labels

同字異用。於 call-site 別其用乃錄之可行所在。沿 probe-feature-flag-state 步二之分辨之法。

各候選，分其每出現：

• gate-call——字串為閘讀函首參（gate("$FLAG", default)、flag("$FLAG", ...)、isEnabled("$FLAG") 等）。
• telemetry-call——字串為 emit/log/track 函首參。
• env-var-check——字串現於 process.env.X 或同類。
• static-label——字串現於 registry、map、注釋而無行為掛接。

# Count gate-call occurrences for the candidate set, using a synthetic
# reader-name pattern. Adapt the regex to the actual reader names found.
GATE_PATTERN='(gate|flag|isEnabled)\(\s*"acme_'
grep -coE "$GATE_PATTERN" "$BUNDLE"

# Per-flag gate-call count
while read -r flag; do
  flag_no_quotes="${flag//\"/}"
  count=$(grep -coE "(gate|flag|isEnabled)\(\s*\"${flag_no_quotes}\"" "$BUNDLE")
  echo -e "${flag_no_quotes}\t${count}"
done < /tmp/sweep-candidates.txt > /tmp/sweep-gate-counts.tsv

得：每唯一字串一錄，形如 {flag, total_occurrences, gate_call_count, telemetry_count, static_label_count, env_var_count}。閘調數乃可行之列；餘為噪濾。

敗：諸候選皆無閘調→閘讀函式之 pattern 誤。或 binary 用此 regex 不及之讀函；或此空間純為遙測（非旗也）。先以 decode-minified-js-gates 試數候選，識真讀函名，再復此步。

Step 3: Build the Extraction Inventory

合各字串之錄為一錄物。CSV 或 JSONL——擇一而守，以利波間 diff。

# JSONL inventory
{
  while IFS=$'\t' read -r flag gate_count; do
    [ "$gate_count" -gt 0 ] || continue   # skip strings with no gate-call evidence
    total=$(grep -c "\"${flag}\"" "$BUNDLE")
    telem=$((total - gate_count))         # rough; refine if other call types matter
    printf '{"flag":"%s","total":%d,"gate_calls":%d,"telemetry":%d,"documented":false}\n' \
      "$flag" "$total" "$gate_count" "$telem"
  done < /tmp/sweep-gate-counts.tsv
} > /tmp/sweep-inventory.jsonl

wc -l /tmp/sweep-inventory.jsonl    # gate-bearing flag count

二派生數要：

• total_unique：前綴所中之全字串（未濾閘前）
• gate_calls：至少一閘調者之子集——campaign 之工作集

得：每閘旗一錄之檔。閘數常為 total_unique 之分（5–20%），二數宜顯異。

敗：錄空或 gate_calls ≈ total_unique→步二之分辨無義。重審讀函 regex。

Step 4: Cross-Reference Against the Documented Set

完備之度依已記之集——campaign 既書之研究之物中所載之旗。對照→報所餘。

DOCUMENTED=/path/to/research/documented-flags.txt   # one flag name per line

# Extract gate-bearing flag names from the inventory
jq -r '.flag' /tmp/sweep-inventory.jsonl | sort -u > /tmp/sweep-extracted.txt

# Compute the documented and remaining sets
sort -u "$DOCUMENTED" > /tmp/sweep-documented.txt
comm -23 /tmp/sweep-extracted.txt /tmp/sweep-documented.txt > /tmp/sweep-remaining.txt

echo "Extracted (gate-bearing):  $(wc -l < /tmp/sweep-extracted.txt)"
echo "Documented:                $(wc -l < /tmp/sweep-documented.txt)"
echo "Remaining (undocumented):  $(wc -l < /tmp/sweep-remaining.txt)"

完備之度乃 remaining——歸 0 時，已記之集盡覆此空間之閘旗。

得：三數。campaign 初，remaining 應為 extracted 之大分。每波減 remaining 至 0。察其軌跡以識停滯（重議已記之旗者）。

敗：documented 逾 extracted→已記者含舊跡（此版已除之旗）。改用 comm -13 以見廢名；archive 為 REMOVED 於下波。

Step 5: Report the DEFAULT-TRUE Population

於閘旗集中，分 binary 默 true 者與默 false（或非布爾）者。DEFAULT-TRUE 旗乃無 server 覆寫即開於諸用者，乃最高信號之子集。

# Heuristic: gate-call shape `gate("flag_name", true)` indicates DEFAULT-TRUE
DEFAULT_TRUE_PATTERN='(gate|flag|isEnabled)\(\s*"acme_[a-zA-Z0-9_]+",\s*!?true\b'
grep -oE "$DEFAULT_TRUE_PATTERN" "$BUNDLE" | grep -oE '"acme_[a-zA-Z0-9_]+"' | sort -u > /tmp/sweep-default-true.txt

DEFAULT_FALSE_PATTERN='(gate|flag|isEnabled)\(\s*"acme_[a-zA-Z0-9_]+",\s*false\b'
grep -oE "$DEFAULT_FALSE_PATTERN" "$BUNDLE" | grep -oE '"acme_[a-zA-Z0-9_]+"' | sort -u > /tmp/sweep-default-false.txt

echo "DEFAULT-TRUE:  $(wc -l < /tmp/sweep-default-true.txt)"
echo "DEFAULT-FALSE: $(wc -l < /tmp/sweep-default-false.txt)"

非布爾默之旗（config 物、TTL 讀者、async 讀者），用 decode-minified-js-gates 分讀者變體——其默形不同，宜入別桶。

得：常分為 10–20% DEFAULT-TRUE，80–90% DEFAULT-FALSE。極端者（90%+ TRUE 或 90%+ FALSE）罕，宜察——或為發布期之慣（盡開以試、盡閉以漸推）。

敗：DEFAULT-TRUE 與 DEFAULT-FALSE 合不覆閘旗錄→餘者用非布爾讀者。對缺口運 decode-minified-js-gates 以分用之變體。

Step 6: Confirm Completion

步四得 remaining = 0 時，行末掃：覓合命名空間而不在已記者之閘調。此捕步一所漏（如串接所隱字面）。

# Search for gate-call shapes containing the namespace prefix, not constrained
# to literal-string occurrences. Loosens Step 1's grep to catch dynamic forms.
DYNAMIC_PATTERN='(gate|flag|isEnabled)\(\s*[^"]*"acme_'
grep -nE "$DYNAMIC_PATTERN" "$BUNDLE" | head -50

# Alternative: ripgrep with multiline for split-string concatenation
rg -U "(gate|flag|isEnabled)\(\s*\"acme_(\\\\\"|[a-zA-Z0-9_])+\"" "$BUNDLE"

對閘調之中與 /tmp/sweep-documented.txt 對。若有指未記者→返步一精化（如治動構之例）。空→campaign 畢。

得：末掃返空（campaign 畢）或小餘（常 <5，多為動構或別讀者）。

敗：步四言 remaining = 0 而末掃返大餘→步一系統性少取。察所漏之 pattern（動字串、別引號、別讀函）→以緊 regex 自步一復行。

驗

• Step 1 unique count is non-zero and within an order of magnitude of expectation
• Step 2 produces a meaningful gate-vs-telemetry split (gate-call count is a fraction, not all or none, of total occurrences)
• Step 3 inventory is one record per gate-bearing flag, in CSV or JSONL
• Step 4 reports total_unique, gate_calls, documented, remaining — and the metric reaches 0 by end of campaign
• Step 5 DEFAULT-TRUE and DEFAULT-FALSE are reported separately
• Step 6 final scan returns empty before declaring the campaign complete
• All worked examples use synthetic placeholders (acme_*, gate(...), etc.); no real flag names or reader names leaked into the artifact
• Sweep output is diff-able against a prior version's sweep (same shape, same fields)

忌

• 止於樣，非掃：campaign 以「已記足矣」終而不算 remaining 者，乃取樣，非掃。此技之要在可驗終止之據。
• 混閘旗與全取：空間中多字非閘。以 total_unique 為分母→誇工而貶完備之顯率。當以 gate_calls 為分母。
• 信一 regex 越版：閘讀函名或主版間更。新 binary 之新掃，宜重驗步二之 pattern。
• 略步六：於 remaining = 0 即宣畢而略動掃→失串接所構之旗。末掃廉而捕辱。
• 泄真名：易誤貼錄中真名於技之示例。acme_* 之佔位之律存焉——存方法異於發現。
• 對舊已記集：已記集若據舊 binary 而成→已除之旗似「已記」而實已不取，真未記之旗則似餘。對照前先以今 binary 更已記集。

參

• probe-feature-flag-state — per-flag classification (downstream of this skill's inventory)
• decode-minified-js-gates — when reader-variant classification is needed mid-sweep
• monitor-binary-version-baselines — longitudinal tracking across binary versions; sweeps can be re-run against each baseline
• redact-for-public-disclosure — how to publish methodology from a sweep without leaking the inventory itself
• conduct-empirical-wire-capture — empirical validation of flags surfaced by the sweep