Enable wrapping help in clap

Cargo.lock

@@ -352,6 +352,7 @@ dependencies = [
  "anstyle",
  "clap_lex",
  "strsim",
+ "terminal_size",
 ]
 
 [[package]]
@@ -929,6 +930,17 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "io-lifetimes"
+version = "1.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eae7b9aee968036d54dce06cebaefd919e4472e753296daccd6d344e3e2df0c2"
+dependencies = [
+ "hermit-abi",
+ "libc",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "iovec"
 version = "0.1.4"
@@ -945,7 +957,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cb0889898416213fab133e1d33a0e5858a48177452750691bde3666d0fdbaf8b"
 dependencies = [
  "hermit-abi",
- "rustix",
+ "rustix 0.38.8",
  "windows-sys 0.48.0",
 ]
 
@@ -1047,7 +1059,7 @@ dependencies = [
  "rand_chacha",
  "rayon",
  "regex",
- "rustix",
+ "rustix 0.38.8",
  "serde",
  "serde_json",
  "smallvec",
@@ -1140,6 +1152,12 @@ version = "0.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0717cef1bc8b636c6e1c1bbdefc09e6322da8a9321966e8928ef80d20f7f770f"
 
+[[package]]
+name = "linux-raw-sys"
+version = "0.3.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ef53942eb7bf7ff43a617b3e2c1c4a5ecf5944a7c1bc12d7ee39bbb15e5c1519"
+
 [[package]]
 name = "linux-raw-sys"
 version = "0.4.5"
@@ -1758,6 +1776,20 @@ version = "0.1.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d626bb9dae77e28219937af045c257c28bfd3f69333c512553507f5f9798cb76"
 
+[[package]]
+name = "rustix"
+version = "0.37.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4d69718bf81c6127a49dc64e44a742e8bb9213c0ff8869a22c308f84c1d4ab06"
+dependencies = [
+ "bitflags 1.3.2",
+ "errno",
+ "io-lifetimes",
+ "libc",
+ "linux-raw-sys 0.3.8",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "rustix"
 version = "0.38.8"
@@ -1767,7 +1799,7 @@ dependencies = [
  "bitflags 2.3.3",
  "errno",
  "libc",
- "linux-raw-sys",
+ "linux-raw-sys 0.4.5",
  "windows-sys 0.48.0",
 ]
 
@@ -1984,7 +2016,17 @@ dependencies = [
  "cfg-if",
  "fastrand",
  "redox_syscall 0.3.5",
- "rustix",
+ "rustix 0.38.8",
+ "windows-sys 0.48.0",
+]
+
+[[package]]
+name = "terminal_size"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e6bf6f19e9f8ed8d4048dc22981458ebcf406d67e94cd422e5ecd73d63b3237"
+dependencies = [
+ "rustix 0.37.23",
  "windows-sys 0.48.0",
 ]
 

Cargo.toml

@@ -25,7 +25,7 @@ blake2 = "0.10.6"
 byteorder = "1.4.3"
 bytes = "1.4.0"
 cargo_metadata = "0.17.0"
-clap = { version = "4.3.23", features = ["derive", "deprecated"] }
+clap = { version = "4.3.23", features = ["derive", "deprecated", "wrap_help"] }
 clap_complete = "4.3.2"
 clap_mangen = "0.2.10"
 chrono = { version = "0.4.26", default-features = false, features = [

cli/tests/test_global_opts.rs

@@ -417,7 +417,8 @@ fn test_help() {
     Usage: jj diffedit [OPTIONS]
 
     Options:
-      -r, --revision <REVISION>  The revision to touch up. Defaults to @ if neither --to nor --from are specified
+      -r, --revision <REVISION>  The revision to touch up. Defaults to @ if neither --to nor --from are
+                                 specified
           --from <FROM>          Show changes from this revision. Defaults to @ if --to is specified
           --to <TO>              Edit changes in this revision. Defaults to @ if --from is specified
       -h, --help                 Print help (see more with '--help')