`parts` is seeded empty and all seven appends are conditional, so
"${parts[@]}" at the join loop can expand an empty array. install.sh
deploys this file to every user machine.
Two things had to both hold for the bare form to be safe: this file
enabling no `set -u`, and the shell being bash 4.4+, which stopped
treating an empty-array expansion as unbound. On bash 3.2 -- macOS's
system bash, an explicit repo target -- adding `set -u` aborts here.
That is also why the hazard is unreproducible on a modern dev box and
why the enforcement is a static scan rather than a runtime test.
Adds the `providers` glob to test-vale-wrap.sh's bash-3.2 scan, which
excluded it precisely because of this defect. Floor is 1 rather than
"count minus slack": the glob holds one file, so any slack at all
means a floor of 0, which passes vacuously on a renamed directory.
Also adds case 27, the regression test for the stale `shellcheck
source=` directives fixed in the next commit (#97 item 2). It lives in
this file because that is where the exemption it guards lives.
Closes #96
Refs #97
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01X7GvKuJfy2WrdBmUttV4DT
110 lines
4.9 KiB
Bash
Executable File
110 lines
4.9 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Session cost thresholds (USD) — on a $20 subscription these signal session weight,
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# not real spend. Calibrate upward if you rarely see amber.
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COST_AMBER=1.50
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COST_RED=3.00
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input=$(cat)
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# --- Raw values from Claude Code ---
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working_dir=$(echo "$input" | jq -r '.workspace.current_dir // .cwd // empty')
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model_name=$(echo "$input" | jq -r '.model.display_name // empty')
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context_used_pct=$(echo "$input" | jq -r '.context_window.used_percentage // empty')
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cost_usd=$(echo "$input" | jq -r '.cost.total_cost_usd // empty')
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input_tokens=$(echo "$input" | jq -r '.context_window.total_input_tokens // 0')
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output_tokens=$(echo "$input" | jq -r '.context_window.total_output_tokens // 0')
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vim_mode=$(echo "$input" | jq -r '.vim.mode // empty')
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dir_name=$(basename "$working_dir")
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git_branch=""
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if [ -n "$working_dir" ] && git -C "$working_dir" rev-parse --is-inside-work-tree 2>/dev/null | grep -q true; then
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git_branch=$(git -C "$working_dir" -c core.fsync=none symbolic-ref --short HEAD 2>/dev/null)
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fi
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# --- Colors ($'...' interprets \033 as actual ESC character) ---
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COLOR_RESET=$'\033[0m'
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COLOR_BOLD_BLUE=$'\033[1;34m' # dir — identity, always stable
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COLOR_BLUE=$'\033[0;34m' # tokens — informational, no urgency
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COLOR_GREEN=$'\033[0;32m' # healthy / within limits
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COLOR_AMBER=$'\033[0;33m' # attention / approaching a limit
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COLOR_RED=$'\033[0;31m' # urgent / act now
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COLOR_MAGENTA=$'\033[0;35m' # vim mode — modal state indicator
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# --- Branch: red on main/master (you are on trunk — danger), green on feature branches ---
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branch_color="$COLOR_GREEN"
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if [[ "$git_branch" == "main" || "$git_branch" == "master" ]]; then
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branch_color="$COLOR_RED"
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fi
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# --- Model tier: color and context thresholds both reflect cost per token.
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# Opus ~$15/MTok → red label, warn at 55/75%
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# Sonnet ~$3/MTok → amber label (mid-tier), warn at 65/85%
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# Haiku ~$0.80/MTok → green label, can fill further at 75/90%
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if [[ "$model_name" == *"Opus"* ]]; then model_color="$COLOR_RED"; CTX_AMBER=55; CTX_RED=75
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elif [[ "$model_name" == *"Haiku"* ]]; then model_color="$COLOR_GREEN"; CTX_AMBER=75; CTX_RED=90
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else model_color="$COLOR_AMBER"; CTX_AMBER=65; CTX_RED=85
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fi
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# --- Token count: cumulative session total, formatted as Xk when >= 1000 ---
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total_tokens=$(( input_tokens + output_tokens ))
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if [ "$total_tokens" -ge 1000 ]; then
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tokens_display=$(awk "BEGIN { printf \"%.0fk\", $total_tokens / 1000 }")
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else
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tokens_display="$total_tokens"
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fi
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# --- Context color: driven by model-aware thresholds above ---
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context_color="$COLOR_GREEN"
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context_pct=0
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if [ -n "$context_used_pct" ]; then
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context_pct=$(printf '%.0f' "$context_used_pct")
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[ "$context_pct" -ge "$CTX_AMBER" ] && context_color="$COLOR_AMBER"
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[ "$context_pct" -ge "$CTX_RED" ] && context_color="$COLOR_RED"
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fi
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# --- Cost: color and display format ---
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cost_color="$COLOR_GREEN"
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cost_display=""
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if [ -n "$cost_usd" ] && [ "$cost_usd" != "0" ]; then
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cost_color=$(awk -v c="$cost_usd" -v amber="$COST_AMBER" -v red="$COST_RED" 'BEGIN {
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if (c >= red) print "\033[0;31m"
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else if (c >= amber) print "\033[0;33m"
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else print "\033[0;32m"
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}')
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# Show cents (¢) below $1 for precision; dollars above
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cost_display=$(awk -v c="$cost_usd" 'BEGIN {
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if (c < 1.00) printf "%.0f\xC2\xA2", c * 100
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else printf "$%.2f", c
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}')
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fi
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# --- Assemble: identity (where) → config (what) → health (context → cost → tokens) ---
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parts=()
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[ -n "$dir_name" ] && parts+=("${COLOR_BOLD_BLUE}${dir_name}${COLOR_RESET}")
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[ -n "$git_branch" ] && parts+=("${branch_color}${git_branch}${COLOR_RESET}")
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[ -n "$model_name" ] && parts+=("${model_color}${model_name}${COLOR_RESET}")
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[ -n "$context_used_pct" ] && parts+=("${context_color}context ${context_pct}%${COLOR_RESET}")
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[ -n "$cost_display" ] && parts+=("${cost_color}${cost_display}${COLOR_RESET}")
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[ "$total_tokens" -gt 0 ] && parts+=("${COLOR_BLUE}${tokens_display} tokens${COLOR_RESET}")
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[ -n "$vim_mode" ] && parts+=("${COLOR_MAGENTA}${vim_mode}${COLOR_RESET}")
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# --- Join with ' · ' separator and print ---
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# `parts` is seeded empty above and every append is conditional, so all seven can
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# be false and the array can reach here with no elements. Two things had to both
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# stay true for bare "${parts[@]}" to be safe: this file enabling no `set -u`
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# (house style in every other script here is `set -euo pipefail`), and the shell
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# being bash 4.4+, which stopped treating an empty-array expansion as unbound.
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# On bash 3.2 -- macOS's system bash, and an explicit repo target -- adding
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# `set -u` aborts here. The guarded form removes the tripwire instead of relying
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# on both conditions holding. install.sh deploys this file to every user
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# machine. See issue #96.
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output=""
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for part in ${parts[@]+"${parts[@]}"}; do
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[ -z "$output" ] && output="$part" || output="${output} · ${part}"
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done
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printf '%s' "$output"
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