mark all functions in headers with VIS_EXPORT or VIS_INTERNAL

if vis actually wants to be a library exported symbols may need
mark up depending on the platform (eg. __declspec(dllexport)).
This needs to be hidden behind a macro because the way you export
is not the same on every platform.

I did this based on the assumption that vis.h was supposed to be
the only interface to the "vis" library. Since nobody actually
uses vis as a library I have no idea if this is actually correct.

Anyway marking up all prototypes like this allows for one to
convert all functions to static if a single translation unit is
used by inserting at the start:

 #define VIS_INTERNAL static
 #define VIS_EXPORT   static

1 files changed, 7 insertions, 7 deletions

diff --git a/text-regex.h b/text-regex.h
index dd87c1c..4b64218 100644
--- a/text-regex.h
+++ b/text-regex.h
@@ -14,12 +14,12 @@
 typedef struct Regex Regex;
 typedef Filerange RegexMatch;
 
-Regex *text_regex_new(void);
-int text_regex_compile(Regex*, const char *pattern, int cflags);
-size_t text_regex_nsub(Regex*);
-void text_regex_free(Regex*);
-int text_regex_match(Regex*, const char *data, int eflags);
-int text_search_range_forward(Text*, size_t pos, size_t len, Regex *r, size_t nmatch, RegexMatch pmatch[], int eflags);
-int text_search_range_backward(Text*, size_t pos, size_t len, Regex *r, size_t nmatch, RegexMatch pmatch[], int eflags);
+VIS_INTERNAL Regex *text_regex_new(void);
+VIS_INTERNAL int text_regex_compile(Regex*, const char *pattern, int cflags);
+VIS_INTERNAL size_t text_regex_nsub(Regex*);
+VIS_INTERNAL void text_regex_free(Regex*);
+VIS_INTERNAL int text_regex_match(Regex*, const char *data, int eflags);
+VIS_INTERNAL int text_search_range_forward(Text*, size_t pos, size_t len, Regex *r, size_t nmatch, RegexMatch pmatch[], int eflags);
+VIS_INTERNAL int text_search_range_backward(Text*, size_t pos, size_t len, Regex *r, size_t nmatch, RegexMatch pmatch[], int eflags);
 
 #endif