Disable pager feature on Windows

Cargo.toml

@@ -21,7 +21,6 @@ docopt = "1"
 env_logger = { version = "0.7", optional = true }
 flate2 = "1"
 log = "0.4"
-pager = "0.15"
 reqwest = "0.9.5"
 serde = "1.0.21"
 serde_derive = "1.0.21"
@@ -30,6 +29,9 @@ toml = "0.5.1"
 walkdir = "2.0.1"
 xdg = "2.1.0"
 
+[target.'cfg(not(windows))'.dependencies]
+pager = "0.15"
+
 [dev-dependencies]
 assert_cmd = "0.10"
 escargot = "0.3"

README.md

@@ -192,6 +192,8 @@ Specifies whether the pager should be used by default or not (default `false`).
 When enabled, `less -R` is used as pager. To override the pager command used,
 set the `PAGER` environment variable.
 
+NOTE: This feature is not available on Windows.
+
 #### `compact`
 
 Set this to enforce more compact output, where empty lines are stripped out

src/main.rs

@@ -25,6 +25,7 @@ use std::time::Duration;
 use ansi_term::Color;
 use app_dirs::AppInfo;
 use docopt::Docopt;
+#[cfg(not(target_os = "windows"))]
 use pager::Pager;
 use serde_derive::Deserialize;
 
@@ -83,8 +84,9 @@ To render a local file (for testing):
     $ tldr --render /path/to/file.md
 ";
 const ARCHIVE_URL: &str = "https://github.com/tldr-pages/tldr/archive/master.tar.gz";
-const PAGER_COMMAND: &str = "less -R";
 const MAX_CACHE_AGE: Duration = Duration::from_secs(2_592_000); // 30 days
+#[cfg(not(target_os = "windows"))]
+const PAGER_COMMAND: &str = "less -R";
 
 #[derive(Debug, Deserialize)]
 struct Args {
@@ -129,6 +131,7 @@ fn print_page(path: &Path, enable_styles: bool) -> Result<(), String> {
 }
 
 /// Set up display pager
+#[cfg(not(target_os = "windows"))]
 fn configure_pager(args: &Args, enable_styles: bool) {
     // Flags have precedence
     if args.flag_pager {
@@ -154,6 +157,11 @@ fn configure_pager(args: &Args, enable_styles: bool) {
     }
 }
 
+#[cfg(target_os = "windows")]
+fn configure_pager(_args: &Args, _enable_styles: bool) {
+    eprintln!("Warning: -p / --pager flag not available on Windows!");
+}
+
 /// Check the cache for freshness
 fn check_cache(args: &Args, cache: &Cache) {
     if !args.flag_update {