Index: src/checkin.c
==================================================================
--- src/checkin.c
+++ src/checkin.c
@@ -1470,10 +1470,11 @@
 static int commit_warning(
   Blob *p,              /* The content of the file being committed. */
   int crnlOk,           /* Non-zero if CR/NL warnings should be disabled. */
   int binOk,            /* Non-zero if binary warnings should be disabled. */
   int encodingOk,       /* Non-zero if encoding warnings should be disabled. */
+  int noPrompt,         /* Non-zero to disable prompts and assume 'No'. */
   const char *zFilename /* The full name of the file being committed. */
 ){
   int bReverse;           /* UTF-16 byte order is reversed? */
   int fUnicode;           /* return value of could_be_utf16() */
   int fBinary;            /* does the blob content appear to be binary? */
@@ -1562,13 +1563,18 @@
     zMsg = mprintf(
          "%s contains %s. Use --no-warnings or the %s to"
                  " disable this warning.\n"
          "Commit anyhow (a=all/%sy/N)? ",
          blob_str(&fname), zWarning, zDisable, zConvert);
-    prompt_user(zMsg, &ans);
+    if( !noPrompt ){
+      prompt_user(zMsg, &ans);
+      cReply = blob_str(&ans)[0];
+      blob_reset(&ans);
+    }else{
+      cReply = 'N';
+    }
     fossil_free(zMsg);
-    cReply = blob_str(&ans)[0];
     if( cReply=='a' || cReply=='A' ){
       allOk = 1;
     }else if( *zConvert && (cReply=='c' || cReply=='C') ){
       char *zOrig = file_newname(zFilename, "original", 1);
       FILE *f;
@@ -1595,11 +1601,10 @@
       return 1;
     }else if( cReply!='y' && cReply!='Y' ){
       fossil_fatal("Abandoning commit due to %s in %s",
                    zWarning, blob_str(&fname));
     }
-    blob_reset(&ans);
     blob_reset(&fname);
   }
   return 0;
 }
 
@@ -1683,10 +1688,13 @@
 **    --integrate                close all merged-in branches
 **    -m|--comment COMMENT-TEXT  use COMMENT-TEXT as commit comment
 **    -M|--message-file FILE     read the commit comment from given file
 **    --mimetype MIMETYPE        mimetype of check-in comment
 **    -n|--dry-run               If given, display instead of run actions
+**    --no-prompt                This option disables prompting the user for
+**                               input and assumes an answer of 'No' for every
+**                               question.
 **    --no-warnings              omit all warnings about file contents
 **    --nosign                   do not attempt to sign this commit with gpg
 **    --private                  do not sync changes and their descendants
 **    --sha1sum                  verify file status using SHA1 hashing rather
 **                               than relying on file mtimes
@@ -1713,10 +1721,11 @@
   char *zUuid;           /* UUID of the new check-in */
   int useSha1sum = 0;    /* True to verify file status using SHA1 hashing */
   int noSign = 0;        /* True to omit signing the manifest using GPG */
   int isAMerge = 0;      /* True if checking in a merge */
   int noWarningFlag = 0; /* True if skipping all warnings */
+  int noPrompt = 0;      /* True if skipping all prompts */
   int forceFlag = 0;     /* Undocumented: Disables all checks */
   int forceDelta = 0;    /* Force a delta-manifest */
   int forceBaseline = 0; /* Force a baseline-manifest */
   int allowConflict = 0; /* Allow unresolve merge conflicts */
   int allowEmpty = 0;    /* Allow a commit with no changes */
@@ -1760,10 +1769,11 @@
   forceFlag = find_option("force", "f", 0)!=0;
   allowConflict = find_option("allow-conflict",0,0)!=0;
   allowEmpty = find_option("allow-empty",0,0)!=0;
   allowFork = find_option("allow-fork",0,0)!=0;
   allowOlder = find_option("allow-older",0,0)!=0;
+  noPrompt = find_option("no-prompt", 0, 0)!=0;
   noWarningFlag = find_option("no-warnings", 0, 0)!=0;
   sCiInfo.zBranch = find_option("branch","b",1);
   sCiInfo.zColor = find_option("bgcolor",0,1);
   sCiInfo.zBrClr = find_option("branchcolor",0,1);
   sCiInfo.closeFlag = find_option("close",0,0)!=0;
@@ -1829,12 +1839,18 @@
 
   /* Require confirmation to continue with the check-in if there is
   ** clock skew
   */
   if( g.clockSkewSeen ){
-    prompt_user("continue in spite of time skew (y/N)? ", &ans);
-    cReply = blob_str(&ans)[0];
+    if( !noPrompt ){
+      prompt_user("continue in spite of time skew (y/N)? ", &ans);
+      cReply = blob_str(&ans)[0];
+      blob_reset(&ans);
+    }else{
+      fossil_print("Abandoning commit due to time skew\n");
+      cReply = 'N';
+    }
     if( cReply!='y' && cReply!='Y' ){
       fossil_exit(1);
     }
   }
 
@@ -1847,13 +1863,20 @@
   ** array is allocated to contain the "id" field from the vfile table
   ** for each file to be committed. Or, if aCommitFile is NULL, all files
   ** should be committed.
   */
   if( select_commit_files() ){
-    prompt_user("continue (y/N)? ", &ans);
-    cReply = blob_str(&ans)[0];
-    if( cReply!='y' && cReply!='Y' ) fossil_exit(1);
+    if( !noPrompt ){
+      prompt_user("continue (y/N)? ", &ans);
+      cReply = blob_str(&ans)[0];
+      blob_reset(&ans);
+    }else{
+      cReply = 'N';
+    }
+    if( cReply!='y' && cReply!='Y' ){
+      fossil_exit(1);
+    }
   }
   isAMerge = db_exists("SELECT 1 FROM vmerge WHERE id=0 OR id<-2");
   if( g.aCommitFile && isAMerge ){
     fossil_fatal("cannot do a partial commit of a merge");
   }
@@ -1954,26 +1977,35 @@
     blob_append(&comment, zComment, -1);
   }else if( zComFile ){
     blob_zero(&comment);
     blob_read_from_file(&comment, zComFile);
     blob_to_utf8_no_bom(&comment, 1);
-  }else if(dryRunFlag){
+  }else if( dryRunFlag ){
     blob_zero(&comment);
-  }else{
+  }else if( !noPrompt ){
     char *zInit = db_text(0, "SELECT value FROM vvar WHERE name='ci-comment'");
     prepare_commit_comment(&comment, zInit, &sCiInfo, vid);
     if( zInit && zInit[0] && fossil_strcmp(zInit, blob_str(&comment))==0 ){
       prompt_user("unchanged check-in comment.  continue (y/N)? ", &ans);
       cReply = blob_str(&ans)[0];
-      if( cReply!='y' && cReply!='Y' ) fossil_exit(1);
+      blob_reset(&ans);
+      if( cReply!='y' && cReply!='Y' ){
+        fossil_exit(1);
+      }
     }
     free(zInit);
   }
   if( blob_size(&comment)==0 ){
     if( !dryRunFlag ){
-      prompt_user("empty check-in comment.  continue (y/N)? ", &ans);
-      cReply = blob_str(&ans)[0];
+      if( !noPrompt ){
+        prompt_user("empty check-in comment.  continue (y/N)? ", &ans);
+        cReply = blob_str(&ans)[0];
+        blob_reset(&ans);
+      }else{
+        fossil_print("Abandoning commit due to empty check-in comment\n");
+        cReply = 'N';
+      }
       if( cReply!='y' && cReply!='Y' ){
         fossil_exit(1);
       }
     }
   }else{
@@ -2023,11 +2055,12 @@
       blob_read_from_file(&content, zFullname);
     }
     /* Do not emit any warnings when they are disabled. */
     if( !noWarningFlag ){
       abortCommit |= commit_warning(&content, crnlOk, binOk,
-                                    encodingOk, zFullname);
+                                    encodingOk, noPrompt,
+                                    zFullname);
     }
     if( contains_merge_marker(&content) ){
       Blob fname; /* Relative pathname of the file */
 
       nConflict++;
@@ -2107,12 +2140,18 @@
     }else if( forceDelta ){
       fossil_fatal("unable to find a baseline-manifest for the delta");
     }
   }
   if( !noSign && !g.markPrivate && clearsign(&manifest, &manifest) ){
-    prompt_user("unable to sign manifest.  continue (y/N)? ", &ans);
-    cReply = blob_str(&ans)[0];
+    if( !noPrompt ){
+      prompt_user("unable to sign manifest.  continue (y/N)? ", &ans);
+      cReply = blob_str(&ans)[0];
+      blob_reset(&ans);
+    }else{
+      fossil_print("Abandoning commit due to manifest signing failure\n");
+      cReply = 'N';
+    }
     if( cReply!='y' && cReply!='Y' ){
       fossil_exit(1);
     }
   }