search: fix -F and -f interaction bug

This fixes what appears to be a pretty egregious regression where the
`-F/--fixed-strings` flag wasn't be applied to patterns supplied via
the `-f/--file` flag. The same bug existed for the `-x/--line-regexp`
flag as well, which we fix here.

Fixes #1176

CHANGELOG.md

@@ -53,6 +53,8 @@ Bug fixes:
   Fix handling of `**` patterns in gitignore files.
 * [BUG #1174](https://github.com/BurntSushi/ripgrep/issues/1174):
   Fix handling of repeated `**` patterns in gitignore files.
+* [BUG #1176](https://github.com/BurntSushi/ripgrep/issues/1176):
+  Fix bug where `-F`/`-x` weren't applied to patterns given via `-f`.
 
 
 0.10.0 (2018-09-07)

src/args.rs

@@ -1271,9 +1271,15 @@ impl ArgMatches {
         if let Some(paths) = self.values_of_os("file") {
             for path in paths {
                 if path == "-" {
-                    pats.extend(cli::patterns_from_stdin()?);
+                    pats.extend(cli::patterns_from_stdin()?
+                        .into_iter()
+                        .map(|p| self.pattern_from_string(p))
+                    );
                 } else {
-                    pats.extend(cli::patterns_from_path(path)?);
+                    pats.extend(cli::patterns_from_path(path)?
+                        .into_iter()
+                        .map(|p| self.pattern_from_string(p))
+                    );
                 }
             }
         }
@@ -1302,13 +1308,17 @@ impl ArgMatches {
     /// Converts a &str pattern to a String pattern. The pattern is escaped
     /// if -F/--fixed-strings is set.
     fn pattern_from_str(&self, pat: &str) -> String {
-        let litpat = self.pattern_literal(pat.to_string());
-        let s = self.pattern_line(litpat);
+        self.pattern_from_string(pat.to_string())
+    }
 
-        if s.is_empty() {
+    /// Applies additional processing on the given pattern if necessary
+    /// (such as escaping meta characters or turning it into a line regex).
+    fn pattern_from_string(&self, pat: String) -> String {
+        let pat = self.pattern_line(self.pattern_literal(pat));
+        if pat.is_empty() {
             self.pattern_empty()
         } else {
-            s
+            pat
         }
     }
 

tests/regression.rs

@@ -672,3 +672,25 @@ rgtest!(r1174, |dir: Dir, mut cmd: TestCommand| {
     dir.create("a/foo", "test");
     cmd.arg("test").assert_err();
 });
+
+// See: https://github.com/BurntSushi/ripgrep/issues/1176
+rgtest!(r1176_literal_file, |dir: Dir, mut cmd: TestCommand| {
+    dir.create("patterns", "foo(bar\n");
+    dir.create("test", "foo(bar");
+
+    eqnice!(
+        "foo(bar\n",
+        cmd.arg("-F").arg("-f").arg("patterns").arg("test").stdout()
+    );
+});
+
+// See: https://github.com/BurntSushi/ripgrep/issues/1176
+rgtest!(r1176_line_regex, |dir: Dir, mut cmd: TestCommand| {
+    dir.create("patterns", "foo\n");
+    dir.create("test", "foobar\nfoo\nbarfoo\n");
+
+    eqnice!(
+        "foo\n",
+        cmd.arg("-x").arg("-f").arg("patterns").arg("test").stdout()
+    );
+});