cmd/shfmt: support long flags

That is, we now allow flags like --minify as well as -mn. Note that we just use Go's standard flag package, so that means we also support -minify and --mn. For consistency, the docs now use --filename and --version, which is backwards compatible as the single-dash versions still work. Fixes #852.
mvdan · May 9, 2022 · bdb1e1d · bdb1e1d
1 parent fc08132
commit bdb1e1d
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diff --git a/cmd/shfmt/Dockerfile b/cmd/shfmt/Dockerfile
@@ -3,7 +3,7 @@ FROM golang:1.17.1-alpine AS build
 WORKDIR /src
 RUN apk add --no-cache git
 COPY . .
-RUN CGO_ENABLED=0 go build -ldflags "-w -s -extldflags '-static' -X main.version=$(git describe --always --dirty --tags)" ./cmd/shfmt
+RUN CGO_ENABLED=0 go build -ldflags "-w -s -extldflags '-static' -X main.knownVersion=$(git describe --always --dirty --tags)" ./cmd/shfmt
 
 FROM alpine:3.14.2 AS alpine
 COPY --from=build /src/shfmt /bin/shfmt