commit 7161cad2c75c323fe8c9316ab7ac14e84411b37f
Author:     Matthias Melcher <git@matthiasm.com>
AuthorDate: Wed Dec 15 19:29:12 2021 +0100
Commit:     Matthias Melcher <github@matthiasm.com>
CommitDate: Wed Dec 15 19:38:09 2021 +0100

    #329 #318: Fixed Fluid indenting and trailing whitespace

 fluid/Fl_Function_Type.cxx | 19 +------------------
 fluid/Fl_Menu_Type.cxx     |  2 +-
 fluid/Fl_Widget_Type.cxx   |  2 +-
 fluid/code.cxx             | 31 ++++++++++++++++++++++++-------
 fluid/code.h               |  2 +-
 5 files changed, 28 insertions(+), 28 deletions(-)

diff --git fluid/Fl_Function_Type.cxx fluid/Fl_Function_Type.cxx
index ac367c7..ab3672e 100644
--- fluid/Fl_Function_Type.cxx
+++ fluid/Fl_Function_Type.cxx
@@ -634,24 +634,7 @@ void Fl_Code_Type::write_code1() {
     main_window->redraw();    // tell fluid to redraw; edits may affect tree's contents
   }
 
-  const char* c = name();
-  if (!c) return;
-
-  const char *pch;
-  const char *ind = indent();
-  while( (pch=strchr(c,'\n')) )
-  {
-    int line_len = int(pch - c);
-    if (line_len < 1)
-      write_c("\n");
-    else
-      write_c("%s%.*s\n", ind, line_len, c);
-    c = pch+1;
-  }
-  if (*c)
-    write_c("%s%s\n", ind, c);
-  else
-    write_c("\n");
+  write_c_indented(name(), 0, '\n');
 }
 
 /**
diff --git fluid/Fl_Menu_Type.cxx fluid/Fl_Menu_Type.cxx
index 7bd55ce..d05f7ea 100644
--- fluid/Fl_Menu_Type.cxx
+++ fluid/Fl_Menu_Type.cxx
@@ -228,7 +228,7 @@ void Fl_Menu_Item_Type::write_static() {
     write_c(", %s", ut);
     if (use_v) write_c(" v");
     write_c(") {\n");
-    write_c_indented(callback());
+    write_c_indented(callback(), 1, 0);
     if (*(d-1) != ';' && *(d-1) != '}') {
       const char *p = strrchr(callback(), '\n');
       if (p) p ++;
diff --git fluid/Fl_Widget_Type.cxx fluid/Fl_Widget_Type.cxx
index faee215..6ad732f 100644
--- fluid/Fl_Widget_Type.cxx
+++ fluid/Fl_Widget_Type.cxx
@@ -2067,7 +2067,7 @@ void Fl_Widget_Type::write_static() {
     write_c(", %s", ut);
     if (use_v) write_c(" v");
     write_c(") {\n");
-    write_c_indented(callback());
+    write_c_indented(callback(), 1, 0);
     if (*(d-1) != ';' && *(d-1) != '}') {
       const char *p = strrchr(callback(), '\n');
       if (p) p ++;
diff --git fluid/code.cxx fluid/code.cxx
index 11d8d2d..ec61902 100644
--- fluid/code.cxx
+++ fluid/code.cxx
@@ -410,18 +410,35 @@ void write_hc(const char *indent, int n, const char* c, const char *com) {
  Write one or more lines of code, indenting each one of them.
  \param[in] textlines one or more lines of text, seperated by \\n
  */
-void write_c_indented(const char *textlines) {
+void write_c_indented(const char *textlines, int inIndent, char inTrailwWith) {
   if (textlines) {
-    indentation++;
+    indentation += inIndent;
     for (;;) {
+      int line_len;
       const char *newline = strchr(textlines, '\n');
-      if (!newline) break;
-      write_c("%s%.*s\n", indent(), (int)(newline-textlines), textlines);
+      if (newline)
+        line_len = (int)(newline-textlines);
+      else
+        line_len = strlen(textlines);
+      if (textlines[0]=='\n') {
+        // avoid trailing spaces
+      } else if (textlines[0]=='#') {
+        // don't indent preprocessor statments starting with '#'
+        write_c("%.*s", (int)(newline-textlines), textlines);
+      } else {
+        // indent all other text lines
+        write_c("%s%.*s", indent(), (int)(newline-textlines), textlines);
+      }
+      if (newline) {
+        write_c("\n");
+      } else {
+        if (inTrailwWith)
+          write_c("%c", inTrailwWith);
+        break;
+      }
       textlines = newline+1;
     }
-    if (*textlines)
-      write_c("%s%s", indent(), textlines);
-    indentation--;
+    indentation -= inIndent;
   }
 }
 
diff --git fluid/code.h fluid/code.h
index 474b87b..5e9a702 100644
--- fluid/code.h
+++ fluid/code.h
@@ -39,7 +39,7 @@ void write_c(const char*, ...) __fl_attr((__format__ (__printf__, 1, 2)));
 void write_cc(const char *, int, const char*, const char*);
 void write_h(const char*, ...) __fl_attr((__format__ (__printf__, 1, 2)));
 void write_hc(const char *, int, const char*, const char*);
-void write_c_indented(const char *textlines);
+void write_c_indented(const char *textlines, int inIndent, char inTrailwWith);
 int write_code(const char *cfile, const char *hfile);
 int write_strings(const char *sfile);
 void write_public(int state); // writes pubic:/private: as needed