[PATCH v2 1/4] run-command: make `exists_in_PATH()` non-static

[Miriam Rubio <mirucam@gmail.com>]

From: Pranit Bauva <pranit.bauva@gmail.com>

Removes the `static` keyword from `exists_in_PATH()` function
and declares the function in `run-command.h` file.
The function will be used in bisect_visualize() in a later
commit.

`exists_in_PATH()` and `locate_in_PATH()` functions don't
depend on file-local variables.

Mentored by: Christian Couder <chriscool@tuxfamily.org>
Mentored by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Tanushree Tumane <tanushreetumane@gmail.com>
Signed-off-by: Miriam Rubio <mirucam@gmail.com>
---
 run-command.c |  2 +-
 run-command.h | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/run-command.c b/run-command.c
index be6bc128cd..210b8858f7 100644
--- a/run-command.c
+++ b/run-command.c
@@ -211,7 +211,7 @@ static char *locate_in_PATH(const char *file)
 	return NULL;
 }
 
-static int exists_in_PATH(const char *file)
+int exists_in_PATH(const char *file)
 {
 	char *r = locate_in_PATH(file);
 	int found = r != NULL;
diff --git a/run-command.h b/run-command.h
index d08414a92e..a520ad1342 100644
--- a/run-command.h
+++ b/run-command.h
@@ -179,6 +179,16 @@ void child_process_clear(struct child_process *);
 
 int is_executable(const char *name);
 
+/**
+ * Returns if a $PATH given by parameter is found or not (it is NULL). This
+ * function uses locate_in_PATH() function that emulates the path search that
+ * execvp would perform. Memory used to store the resultant path is freed by
+ * the function.
+ *
+ * The caller should ensure that $PATH contains no directory separators.
+ */
+int exists_in_PATH(const char *file);
+
 /**
  * Start a sub-process. Takes a pointer to a `struct child_process`
  * that specifies the details and returns pipe FDs (if requested).
-- 
2.29.2