Allow + in filenames without escaping

Due to #690, file.c++ used to be escaped. + seems as safe as -, so allow
it to not be escaped, to keep compile command lines with a fairly common
extension slightly cleaner.

2 files changed, 3 insertions, 2 deletions

diff --git a/src/util.cc b/src/util.cc
index 24d231f..484b0c1 100644
--- a/src/util.cc
+++ b/src/util.cc
@@ -183,6 +183,7 @@ static inline bool IsKnownShellSafeCharacter(char ch) {
 
   switch (ch) {
     case '_':
+    case '+':
     case '-':
     case '.':
     case '/':
diff --git a/src/util_test.cc b/src/util_test.cc
index f827e5a..b58d15e 100644
--- a/src/util_test.cc
+++ b/src/util_test.cc
@@ -148,7 +148,7 @@ TEST(PathEscaping, TortureTest) {
 }
 
 TEST(PathEscaping, SensiblePathsAreNotNeedlesslyEscaped) {
-  const char* path = "some/sensible/path/without/crazy/characters.cc";
+  const char* path = "some/sensible/path/without/crazy/characters.c++";
   string result;
 
   GetWin32EscapedString(path, &result);
@@ -160,7 +160,7 @@ TEST(PathEscaping, SensiblePathsAreNotNeedlesslyEscaped) {
 }
 
 TEST(PathEscaping, SensibleWin32PathsAreNotNeedlesslyEscaped) {
-  const char* path = "some\\sensible\\path\\without\\crazy\\characters.cc";
+  const char* path = "some\\sensible\\path\\without\\crazy\\characters.c++";
   string result;
 
   GetWin32EscapedString(path, &result);