option SaveFilename to configure path and pattern for HTML and PNG sc…

…reen dumps (mintty#1025),

default without colons

docs/mintty.1

@@ -2084,6 +2084,11 @@ Disabling this setting disables logging initially.
 If a log file name is specified with \fBLog=...\fP and \fBLogging=no\fP,
 logging can be enabled (and toggled) from the extended context menu.
 
+.TP
+\fBFilename pattern for screen saving\fP (SaveFilename=mintty.%Y-%m-%d_%H-%M-%S)
+This setting selects the location and filename pattern (which is expanded 
+with the strftime(3) function) for .html and .png screen dumps.
+
 .TP
 \fBWindow title\fP (Title=)
 The \fBTitle\fP setting can be used to determine the initial window title.

src/config.c

@@ -185,6 +185,7 @@ const config default_cfg = {
   .char_narrowing = 75,
   .emojis = 0,
   .emoji_placement = 0,
+  .save_filename = W("mintty.%Y-%m-%d_%H-%M-%S"),
   .app_id = W(""),
   .app_name = W(""),
   .app_launch_cmd = W(""),
@@ -456,6 +457,7 @@ options[] = {
   {"CharNarrowing", OPT_INT, offcfg(char_narrowing)},
   {"Emojis", OPT_EMOJIS, offcfg(emojis)},
   {"EmojiPlacement", OPT_EMOJI_PLACEMENT, offcfg(emoji_placement)},
+  {"SaveFilename", OPT_WSTRING, offcfg(save_filename)},
   {"AppID", OPT_WSTRING, offcfg(app_id)},
   {"AppName", OPT_WSTRING, offcfg(app_name)},
   {"AppLaunchCmd", OPT_WSTRING, offcfg(app_launch_cmd)},
@@ -651,6 +653,22 @@ static opt_val
 #endif
 
 
+char *
+save_filename(char * suf)
+{
+  char * pat = path_win_w_to_posix(cfg.save_filename);
+  // e.g. "mintty.%Y-%m-%d_%H-%M-%S"
+
+  struct timeval now;
+  gettimeofday(& now, 0);
+  char * fn = newn(char, MAX_PATH + 1 + strlen(suf));
+  strftime(fn, MAX_PATH, pat, localtime(& now.tv_sec));
+  free(pat);
+  strcat(fn, suf);
+  return fn;
+}
+
+
 #define dont_debug_opterror
 
 static void

src/config.h

@@ -181,6 +181,7 @@ typedef struct {
   int char_narrowing;
   char emojis;
   char emoji_placement;
+  wstring save_filename;
   wstring app_id;
   wstring app_name;
   wstring app_launch_cmd;
@@ -241,5 +242,6 @@ extern void copy_config(char * tag, config * dst, const config * src);
 extern void apply_config(bool save);
 extern wchar * getregstr(HKEY key, wstring subkey, wstring attribute);
 extern uint getregval(HKEY key, wstring subkey, wstring attribute);
+extern char * save_filename(char * suf);
 
 #endif

src/termclip.c

@@ -953,8 +953,7 @@ term_export_html(bool do_open)
 {
   struct timeval now;
   gettimeofday(& now, 0);
-  char * htmlf = newn(char, MAX_PATH + 1);
-  strftime(htmlf, MAX_PATH, "mintty.%F_%T.html", localtime (& now.tv_sec));
+  char * htmlf = save_filename(".html");
 
   int hfd = open(htmlf, O_WRONLY | O_CREAT | O_EXCL, 0600);
   if (hfd < 0) {

src/winmain.c

@@ -1400,8 +1400,7 @@ term_save_image(void)
 {
   struct timeval now;
   gettimeofday(& now, 0);
-  char * copf = newn(char, MAX_PATH + 1);
-  strftime(copf, MAX_PATH, "mintty.%F_%T.png", localtime (& now.tv_sec));
+  char * copf = save_filename(".png");
   wchar * copyfn = path_posix_to_win_w(copf);
   free(copf);
 

wiki/Changelog.md

@@ -11,6 +11,7 @@ Configuration
   * New option PrintableControls to make controls visible (#1019).
   * New options Tek*.
   * New user-definable functions save-image, tek-copy, tek-page, tek-reset.
+  * New option SaveFilename.
 
 ### 3.2.0 (20 June 2020) ###