make lineno_width() from blame reusable for others

diff --git a/pager.c b/pager.c
index dac358f047550a07dd8d90b2e410feab3eebd534..96c07babbd7756a59fb5e891bf78f9c4396fed13 100644 (file)
--- a/pager.c
+++ b/pager.c
@@ -11,8 +11,6 @@
  * something different on Windows.
  */
 
-static int spawned_pager;
-
 #ifndef WIN32
 static void pager_preexec(void)
 {
@@ -78,7 +76,7 @@ void setup_pager(void)
        if (!pager)
                return;
 
-       spawned_pager = 1; /* means we are emitting to terminal */
+       setenv("GIT_PAGER_IN_USE", "true", 1);
 
        /* spawn the pager */
        pager_argv[0] = pager;
@@ -109,10 +107,18 @@ void setup_pager(void)
 int pager_in_use(void)
 {
        const char *env;
-
-       if (spawned_pager)
-               return 1;
-
        env = getenv("GIT_PAGER_IN_USE");
        return env ? git_config_bool("GIT_PAGER_IN_USE", env) : 0;
 }
+
+/*
+ * How many columns do we need to show this number in decimal?
+ */
+int decimal_width(int number)
+{
+       int i, width;
+
+       for (width = 1, i = 10; i <= number; width++)
+               i *= 10;
+       return width;
+}