1 files changed, 12 insertions, 0 deletions
diff --git a/run-command.h b/run-command.h
index ad207daced..b9aff74914 100644
--- a/run-command.h
+++ b/run-command.h
@@ -191,6 +191,18 @@ void child_process_clear(struct child_process *);
 int is_executable(const char *name);
 
 /**
+ * Check if the command exists on $PATH. This emulates the path search that
+ * execvp would perform, without actually executing the command so it
+ * can be used before fork() to prepare to run a command using
+ * execve() or after execvp() to diagnose why it failed.
+ *
+ * The caller should ensure that command contains no directory separators.
+ *
+ * Returns 1 if it is found in $PATH or 0 if the command could not be found.
+ */
+int exists_in_PATH(const char *command);
+
+/**
  * Start a sub-process. Takes a pointer to a `struct child_process`
  * that specifies the details and returns pipe FDs (if requested).
  * See below for details.