Ch

$ ch "Explain goroutines in Go in 4 bullets"
Goroutines are lightweight functions scheduled by the Go runtime, not one OS thread each.
- start one with go f() and keep the caller moving
- communicate with channels when ownership should move between tasks
- use sync.WaitGroup or context.Context so work has a clean lifecycle
- prefer small, boring goroutines over hidden global background work

$ git diff | ch "summarize the risky changes"
Risk summary:
- config parsing now treats explicit false correctly
- export paths sanitize slashes but preserve spaces and dots
- add one regression test for quoted filenames and one for empty custom names

$ ch -l README.md "turn install steps into a checklist"
Checklist:
1. install with curl | bash
2. set OPENAI_API_KEY or switch providers
3. run ch -v to verify version metadata
4. try a direct prompt, then interactive mode

$ ch -s https://youtube.com/watch?v=AH0xG1iStf4
YouTube: Ch demo
metadata loaded, subtitles compacted, cue numbers stripped
ready to paste into a prompt or pipe into another command

$ ch -w "Go 1.26 release notes"
1. Go release notes - https://go.dev/doc/devel/release
2. Go blog - https://go.dev/blog/
3. Standard library changes - https://pkg.go.dev/std

$ ch -y -d ./internal
codedump saved: ch_dump_internal_2026-08-19.txt
included 47 text files, skipped binaries and vendor caches

$ ch -y -b ./cmd cli_context.txt
codedump saved: cli_context.txt
interactive pickers skipped by --yes

$ cat README.md | ch -t
Token estimate for stdin: 14,820 tokens
model: gpt-5.4-mini

$ ch -p groq -m llama3-8b-8192 "give me a fast regex"
groq llama3-8b-8192
Use (?m)^func\s+([A-Za-z0-9_]+)\( to list Go function names line-by-line.

$ ch
interactive session started
openai gpt-5.4-mini

user: !p xai
xai grok-4-fast-non-reasoning
user: !o
google gemini-2.5-flash
user: !p openrouter
openrouter anthropic/claude-3.5-sonnet
user: !r high
reasoning: high
user: !l ./internal/config
loaded 6 files into context
user: What config behavior should tests protect?
Protect env overrides, explicit false booleans, shallow_load_dirs defaults, and provider key mapping.
user: !e config_notes.txt
exported chat: config_notes.txt
user: !z
compressed summary (through turn 5):
Env overrides, explicit false booleans, shallow_load_dirs, provider key mapping, export sanitization.
user: !q
bye

$ ch -c "continue where we left off"
loaded latest session and sent follow-up prompt

$ 

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