Replace `(char *)0' et al with `NULL'.

[nmh] / sbr / context_read.c

diff --git a/sbr/context_read.c b/sbr/context_read.c
index adaa172b5f132ad779c6781b81e5b88cbf298a7d..748114ed14eba8092ae62aa3a289700ab5effa6f 100644 (file)
--- a/sbr/context_read.c
+++ b/sbr/context_read.c
@@ -48,8 +48,8 @@ context_read (void)
      * the home directory field in the password file if that's not found.
      */
 
-    if ((mypath = getenv("HOME")) == (char *)0) {
-       if ((pw = getpwuid(getuid())) == (struct passwd *)0 || *pw->pw_dir == '\0')
+    if ((mypath = getenv("HOME")) == NULL) {
+       if ((pw = getpwuid(getuid())) == NULL || *pw->pw_dir == '\0')
            adios(NULL, "cannot determine your home directory");
        else
            mypath = pw->pw_dir;
@@ -68,16 +68,16 @@ context_read (void)
         /* defpath is an absolute path; make sure that always MH is, too. */
        setenv("MH", defpath, 1);
        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);
+       if ((ib = fopen(defpath, "r")) == NULL)
+           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.");
+       if ((ib = fopen(defpath, "r")) == NULL)
+           adios(NULL, "Doesn't look like nmh is installed.  Run install-mh to do so.");
 
        cp = mh_profile;
     }
@@ -90,7 +90,7 @@ context_read (void)
      * Convert a relative path name to an absolute 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);
 
     if (*cp == '\0')
@@ -117,14 +117,14 @@ context_read (void)
     }
 
     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 file comes from the
      * profile unless overridden by the MHCONTEXT environment variable.
      */
 
-    if ((cp = getenv ("MHCONTEXT")) == (char *)0 || *cp == '\0')
+    if ((cp = getenv ("MHCONTEXT")) == NULL || *cp == '\0')
        cp = context;
 
     /* context is NULL if context_foil() was called to disable use of context