ripgrep: add --glob-case-insensitive

This flag forces -g/--glob patterns to be treated case-insensitively, as with
--iglob patterns.

Fixes BurntSushi#1293

complete/_rg

@@ -104,6 +104,10 @@ _rg() {
     '*'{-g+,--glob=}'[include/exclude files matching specified glob]:glob'
     '*--iglob=[include/exclude files matching specified case-insensitive glob]:glob'
 
+    + '(glob-case-insensitive)' # File-glob case sensitivity options
+    '--glob-case-insensitive[treat -g/--glob patterns case insensitively]'
+    $no'--no-glob-case-insensitive[treat -g/--glob patterns case sensitively]'
+
     + '(heading)' # Heading options
     '(pretty-vimgrep)--heading[show matches grouped by file name]'
     "(pretty-vimgrep)--no-heading[don't show matches grouped by file name]"

src/app.rs

@@ -571,6 +571,7 @@ pub fn all_args_and_flags() -> Vec<RGArg> {
     flag_fixed_strings(&mut args);
     flag_follow(&mut args);
     flag_glob(&mut args);
+    flag_glob_case_insensitive(&mut args);
     flag_heading(&mut args);
     flag_hidden(&mut args);
     flag_iglob(&mut args);
@@ -1218,6 +1219,25 @@ it.
     args.push(arg);
 }
 
+fn flag_glob_case_insensitive(args: &mut Vec<RGArg>) {
+    const SHORT: &str = "Process all glob patterns case insensitively.";
+    const LONG: &str = long!("\
+Process glob patterns given with the -g/--glob flag case insensitively. This
+effectively treats --glob as --iglob.
+
+This flag can be disabled with the --no-glob-case-insensitive flag.
+");
+    let arg = RGArg::switch("glob-case-insensitive")
+        .help(SHORT).long_help(LONG)
+        .overrides("no-glob-case-insensitive");
+    args.push(arg);
+
+    let arg = RGArg::switch("no-glob-case-insensitive")
+        .hidden()
+        .overrides("glob-case-insensitive");
+    args.push(arg);
+}
+
 fn flag_heading(args: &mut Vec<RGArg>) {
     const SHORT: &str = "Print matches grouped by each file.";
     const LONG: &str = long!("\

src/args.rs

@@ -1268,6 +1268,10 @@ impl ArgMatches {
     /// Builds the set of glob overrides from the command line flags.
     fn overrides(&self) -> Result<Override> {
         let mut builder = OverrideBuilder::new(env::current_dir()?);
+        // Make all globs case insensitive with --glob-case-insensitive.
+        if self.is_present("glob-case-insensitive") {
+            builder.case_insensitive(true).unwrap();
+        }
         for glob in self.values_of_lossy_vec("glob") {
             builder.add(&glob)?;
         }

tests/misc.rs

@@ -341,6 +341,14 @@ rgtest!(glob_case_sensitive, |dir: Dir, mut cmd: TestCommand| {
     eqnice!("file2.html:Sherlock\n", cmd.stdout());
 });
 
+rgtest!(glob_always_case_insensitive, |dir: Dir, mut cmd: TestCommand| {
+    dir.create("sherlock", SHERLOCK);
+    dir.create("file.HTML", "Sherlock");
+    cmd.args(&["--glob-case-insensitive", "--glob", "*.html", "Sherlock"]);
+
+    eqnice!("file.HTML:Sherlock\n", cmd.stdout());
+});
+
 rgtest!(byte_offset_only_matching, |dir: Dir, mut cmd: TestCommand| {
     dir.create("sherlock", SHERLOCK);
     cmd.arg("-b").arg("-o").arg("Sherlock");