7 files changed, 14 insertions, 31 deletions
diff --git a/engines/glk/tads/tads2/error.cpp b/engines/glk/tads/tads2/error.cpp
index 62c5e9a3e6..ad83d06f21 100644
--- a/engines/glk/tads/tads2/error.cpp
+++ b/engines/glk/tads/tads2/error.cpp
@@ -184,16 +184,6 @@ void errsign(errcxdef *ctx, int e) {
 #endif
 }
 
-/* enter a string argument */
-char *errstr(errcxdef *ctx, const char *str, int len) {
-    char *ret = &ctx->errcxbuf[ctx->errcxofs];
-    
-    memcpy(ret, str, (size_t)len);
-    ret[len] = '\0';
-    ctx->errcxofs += len + 1;
-    return(ret);
-}
-
 /* log an error: base function */
 void errlogn(errcxdef *ctx, int err) {
 	error("errlogn");
diff --git a/engines/glk/tads/tads2/output.cpp b/engines/glk/tads/tads2/output.cpp
index 6ff2a992a4..6f5cd842e7 100644
--- a/engines/glk/tads/tads2/output.cpp
+++ b/engines/glk/tads/tads2/output.cpp
@@ -194,8 +194,7 @@ static objnum    cmdActor;                                 /* current actor */
 /* forward declarations of static functions */
 static void outstring_stream(out_stream_info *stream, const char *s);
 static void outchar_noxlat_stream(out_stream_info *stream, char c);
-static char out_parse_entity(char *outbuf, size_t outbuf_size,
-                             char **sp, size_t *slenp);
+static char out_parse_entity(char *outbuf, size_t outbuf_size, const char **sp, size_t *slenp);
 
 
 /* ------------------------------------------------------------------------ */
@@ -1741,7 +1740,7 @@ static void out_pop_stream()
  *   Get the next character, writing the previous character to the given
  *   output stream if it's not null. 
  */
-static char nextout_copy(char **s, size_t *slen,
+static char nextout_copy(const char **s, size_t *slen,
                          char prv, out_stream_info *stream)
 {
     /* if there's a stream, write the previous character to the stream */
@@ -1759,7 +1758,7 @@ static char nextout_copy(char **s, size_t *slen,
  *   the next character after the tag name.
  */
 static char read_tag(char *dst, size_t dstlen, int *is_end_tag,
-                     char **s, size_t *slen, out_stream_info *stream)
+                     const char **s, size_t *slen, out_stream_info *stream)
 {
     char c;
     
@@ -2722,12 +2721,10 @@ static int outformatlen_stream(out_stream_info *stream,
 /*
  *   Parse an HTML entity markup 
  */
-static char out_parse_entity(char *outbuf, size_t outbuf_size,
-                             char **sp, size_t *slenp)
-{
+static char out_parse_entity(char *outbuf, size_t outbuf_size, const char **sp, size_t *slenp) {
     char  ampbuf[10];
     char *dst;
-    char *orig_s;
+    const char *orig_s;
     size_t orig_slen;
     const amp_tbl_t *ampptr;
     size_t lo, hi, cur;
@@ -2988,8 +2985,7 @@ void tio_set_html_expansion(unsigned int html_char_val,
 /*
  *   Write out a c-style (null-terminated) string.
  */
-int outformat(char *s)
-{
+int outformat(const char *s) {
     return outformatlen(s, strlen(s));
 }
 
@@ -2999,11 +2995,10 @@ int outformat(char *s)
  *   This routine sends out a string, one character at a time (via outchar).
  *   Escape codes ('\n', and so forth) are handled here.
  */
-int outformatlen(char *s, uint slen)
-{
+int outformatlen(const char *s, uint slen) {
     char     c;
     uint     orig_slen;
-    char    *orig_s;
+    const char *orig_s;
     int      ret;
     int      called_filter;
 
diff --git a/engines/glk/tads/tads2/run.cpp b/engines/glk/tads/tads2/run.cpp
index 5a9ede0f2b..4179ff2864 100644
--- a/engines/glk/tads/tads2/run.cpp
+++ b/engines/glk/tads/tads2/run.cpp
@@ -281,7 +281,7 @@ void runrepush(runcxdef *ctx, runsdef *val)
 }
 
 /* push a counted-length string onto the stack */
-void runpstr(runcxdef *ctx, char *str, int len, int sav)
+void runpstr(runcxdef *ctx, const char *str, int len, int sav)
 {
 	runsdef val;
 
diff --git a/engines/glk/tads/tads2/run.h b/engines/glk/tads/tads2/run.h
index 6c303b81ce..297cb9d540 100644
--- a/engines/glk/tads/tads2/run.h
+++ b/engines/glk/tads/tads2/run.h
@@ -146,7 +146,7 @@ void runpnil(runcxdef *ctx);
 void runpbuf(runcxdef *ctx, int typ, void *val);
 
 /* push a counted-length string onto the stack */
-void runpstr(runcxdef *ctx, char *str, int len, int sav);
+void runpstr(runcxdef *ctx, const char *str, int len, int sav);
 
 /*
  *   Push a C-style string onto the stack, converting escape codes.  If
diff --git a/engines/glk/tads/tads2/runtime_driver.cpp b/engines/glk/tads/tads2/runtime_driver.cpp
index 20ba6c1e99..aec86702ae 100644
--- a/engines/glk/tads/tads2/runtime_driver.cpp
+++ b/engines/glk/tads/tads2/runtime_driver.cpp
@@ -789,9 +789,7 @@ static void trdmain1(errcxdef *ec, int argc, char *argv[],
 #endif
 
 /* log an error */
-static void trdlogerr(void *ctx0, char *fac, int err,
-                      int argc, erradef *argv)
-{
+static void trdlogerr(void *ctx0, const char *fac, int err, int argc, erradef *argv) {
     errcxdef *ctx = (errcxdef *)ctx0;
     char      buf[256];
     char      msg[256];
diff --git a/engines/glk/tads/tads2/text_io.h b/engines/glk/tads/tads2/text_io.h
index 9a0e19885d..d4dd16ff7d 100644
--- a/engines/glk/tads/tads2/text_io.h
+++ b/engines/glk/tads/tads2/text_io.h
@@ -95,7 +95,7 @@ void outfmt(tiocxdef *ctx, uchar *txt);
 int outformat(const char *s);
 
 /* format a counted-length string, which may not be null-terminated */
-int outformatlen(char *s, uint len);
+int outformatlen(const char *s, uint len);
 
 /* flush output, with specified newline mode */
 void outflushn(int nl);
diff --git a/engines/glk/tads/tads2/vocabulary_parser.cpp b/engines/glk/tads/tads2/vocabulary_parser.cpp
index 719005851c..0b7bed6db9 100644
--- a/engines/glk/tads/tads2/vocabulary_parser.cpp
+++ b/engines/glk/tads/tads2/vocabulary_parser.cpp
@@ -667,7 +667,7 @@ struct vocerr_va_info
     char user_msg[400];
 
     /* the sprintf-style format string to display */
-    char *fmt;
+    const char *fmt;
 
     /* 
      *   Pointer to the output buffer to use to format the string 'fmt' with
@@ -734,7 +734,7 @@ static void vocerr_va_prep(voccxdef *ctx, struct vocerr_va_info *info,
             };
             struct argbuf_t  args[5];
             struct argbuf_t *argp;
-            char  *p;
+            const char  *p;
 
             /* 
              *   Retrieve the arguments by examining the format string.  We