We have `NULL' in order to not need to write `(char *)0' anymore.

[mmh] / sbr / context_read.c

diff --git a/sbr/context_read.c b/sbr/context_read.c
index 57653ea..6ca9a3d 100644 (file)
--- a/sbr/context_read.c
+++ b/sbr/context_read.c
@@ -47,7 +47,7 @@ context_read(void)
        ** Find user's home directory. Try the HOME environment variable first,
        ** the home directory field in the password file if that's not found.
        */
-       if ((mypath = getenv("HOME")) == (char *)0) {
+       if ((mypath = getenv("HOME")) == NULL) {
                if ((pw = getpwuid(getuid())) == (struct passwd *)0 ||
                                        *pw->pw_dir == '\0')
                        adios(NULL, "cannot determine your home directory");
@@ -67,15 +67,15 @@ context_read(void)
                defpath = getcpy(expanddir(cp));
 
                if (stat(defpath, &st) != -1 && (st.st_mode & S_IFREG) == 0)
-                       adios((char *)0, "`%s' specified by your MH environment variable is not a normal file", cp);
+                       adios(NULL, "`%s' specified by your MH environment variable is not a normal file", cp);
 
                if ((ib = fopen(defpath, "r")) == (FILE *)0)
-                       adios((char *)0, "unable to read the `%s' profile specified by your MH environment variable", defpath);
+                       adios(NULL, "unable to read the `%s' profile specified by your MH environment variable", defpath);
        } else {
                defpath = concat(mypath, "/", mh_profile, NULL);
 
                if ((ib = fopen(defpath, "r")) == (FILE *)0)
-                       adios((char *)0, "Doesn't look like nmh is installed.  Run install-mh to do so.");
+                       adios(NULL, "Doesn't look like nmh is installed.  Run install-mh to do so.");
 
                cp = mh_profile;
        }
@@ -89,7 +89,7 @@ context_read(void)
        ** one rooted in the home directory.
        */
 
-       if ((cp = context_find("path")) == (char *)0)
+       if ((cp = context_find("path")) == NULL)
                adios(NULL, "Your %s file does not contain a path entry.",
                                defpath);
 
@@ -112,7 +112,7 @@ context_read(void)
                if (!makedir(nd))
                        adios(NULL, "unable to create %s", nd);
        } else if ((st.st_mode & S_IFDIR) == 0)
-               adios((char *)0, "`%s' is not a directory", nd);
+               adios(NULL, "`%s' is not a directory", nd);
 
        /*
        ** Open and read user's context file.  The name of the context
@@ -120,7 +120,7 @@ context_read(void)
        ** environment variable.
        */
 
-       if ((cp = getenv("MHCONTEXT")) == (char *)0 || *cp == '\0')
+       if ((cp = getenv("MHCONTEXT")) == NULL || *cp == '\0')
                cp = context;
 
        /*