[PATCH 1/5] refs: expose `is_pseudoref_syntax()`

[Karthik Nayak <karthik.188@gmail.com>]

The `is_pseudoref_syntax()` function is static, since it is only used
within `refs.c`. In the following commit, we will use this function to
provide an utility to add pseudorefs to the loose refs cache. So let's
expose this function via `refs.h`.

Signed-off-by: Karthik Nayak <karthik.188@gmail.com>
---
 refs.c | 2 +-
 refs.h | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/refs.c b/refs.c
index 2f58a3460a..5999605230 100644
--- a/refs.c
+++ b/refs.c
@@ -827,7 +827,7 @@ int is_per_worktree_ref(const char *refname)
 	       starts_with(refname, "refs/rewritten/");
 }
 
-static int is_pseudoref_syntax(const char *refname)
+int is_pseudoref_syntax(const char *refname)
 {
 	const char *c;
 
diff --git a/refs.h b/refs.h
index ff113bb12a..f1bbad83fb 100644
--- a/refs.h
+++ b/refs.h
@@ -846,6 +846,12 @@ const char **hidden_refs_to_excludes(const struct strvec *hide_refs);
 /* Is this a per-worktree ref living in the refs/ namespace? */
 int is_per_worktree_ref(const char *refname);
 
+/*
+ * Check whether a refname matches the pseudoref syntax. This is a surface
+ * level check and can present false positives.
+ */
+int is_pseudoref_syntax(const char *refname);
+
 /* Describes how a refname relates to worktrees */
 enum ref_worktree_type {
 	REF_WORKTREE_CURRENT, /* implicitly per worktree, eg. HEAD or
-- 
2.43.GIT