[latexila] PostProcessorLatexmk: better heuristic for setting has-details

[Sébastien Wilmet <swilmet src gnome org>]

commit 46819950d0fffddca59261f3104c31d29dafe14c
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Tue Sep 30 21:02:18 2014 +0200

    PostProcessorLatexmk: better heuristic for setting has-details

 src/liblatexila/latexila-post-processor-latex.c   |   14 +++++++++++
 src/liblatexila/latexila-post-processor-latex.h   |    6 +++-
 src/liblatexila/latexila-post-processor-latexmk.c |   25 ++++++++++++++++-----
 3 files changed, 37 insertions(+), 8 deletions(-)
---
diff --git a/src/liblatexila/latexila-post-processor-latex.c b/src/liblatexila/latexila-post-processor-latex.c
index 7e585d6..72876e2 100644
--- a/src/liblatexila/latexila-post-processor-latex.c
+++ b/src/liblatexila/latexila-post-processor-latex.c
@@ -1443,3 +1443,17 @@ latexila_post_processor_latex_new (void)
 {
   return g_object_new (LATEXILA_TYPE_POST_PROCESSOR_LATEX, NULL);
 }
+
+/**
+ * latexila_post_processor_latex_get_errors_count:
+ * @pp: a #LatexilaPostProcessorLatex.
+ *
+ * Returns: the number of errors.
+ */
+gint
+latexila_post_processor_latex_get_errors_count (LatexilaPostProcessorLatex *pp)
+{
+  g_return_val_if_fail (LATEXILA_IS_POST_PROCESSOR_LATEX (pp), 0);
+
+  return pp->priv->errors_count;
+}
diff --git a/src/liblatexila/latexila-post-processor-latex.h b/src/liblatexila/latexila-post-processor-latex.h
index ab980e6..ea602c2 100644
--- a/src/liblatexila/latexila-post-processor-latex.h
+++ b/src/liblatexila/latexila-post-processor-latex.h
@@ -48,9 +48,11 @@ struct _LatexilaPostProcessorLatexClass
   LatexilaPostProcessorClass parent_class;
 };
 
-GType                   latexila_post_processor_latex_get_type  (void) G_GNUC_CONST;
+GType                   latexila_post_processor_latex_get_type          (void) G_GNUC_CONST;
 
-LatexilaPostProcessor * latexila_post_processor_latex_new       (void);
+LatexilaPostProcessor * latexila_post_processor_latex_new               (void);
+
+gint                    latexila_post_processor_latex_get_errors_count  (LatexilaPostProcessorLatex *pp);
 
 G_END_DECLS
 
diff --git a/src/liblatexila/latexila-post-processor-latexmk.c 
b/src/liblatexila/latexila-post-processor-latexmk.c
index fbb397f..23357b7 100644
--- a/src/liblatexila/latexila-post-processor-latexmk.c
+++ b/src/liblatexila/latexila-post-processor-latexmk.c
@@ -522,6 +522,8 @@ run_latex_post_processor (LatexilaPostProcessorLatexmk *pp,
   LatexilaBuildMsg *msg;
   GQueue *initial_children;
   GList *l;
+  gboolean has_details;
+  gint latex_errors_count;
 
   g_assert (pp->priv->last_latex_sub_command != NULL);
   g_assert (pp->priv->last_latex_lines != NULL);
@@ -544,7 +546,6 @@ run_latex_post_processor (LatexilaPostProcessorLatexmk *pp,
   initial_children = msg->children;
 
   msg->children = latexila_post_processor_take_messages (pp_latex);
-  g_object_unref (pp_latex);
 
   pp->priv->last_latex_messages = msg->children->head;
 
@@ -559,12 +560,24 @@ run_latex_post_processor (LatexilaPostProcessorLatexmk *pp,
   /* Expand only the last latex command. */
   msg->expand = TRUE;
 
-  /* Almost all the time, the user wants to see only the latex output.
-   * If an error has occured, we verify if the last command was a latex command.
-   * If it is the case, there is no need to show all output.
+  /* Set has-details.
+   * Almost all the time, the user wants to see only the latex output.
+   */
+
+  /* Another solution is to know if the last rule was a latex rule, but it
+   * doesn't work well. For example if a BibTeX error occurs, Latexmk run the
+   * latex command a second time, so the last command is latex, but the latex
+   * output has no errors, the error is only in BibTeX.
+   * So it's probably better to check the number of latex errors, as is done
+   * below.
    */
-  if (succeeded || pp->priv->last_rule_is_latex_rule)
-    g_object_set (pp, "has-details", TRUE, NULL);
+
+  latex_errors_count = latexila_post_processor_latex_get_errors_count (LATEXILA_POST_PROCESSOR_LATEX 
(pp_latex));
+
+  has_details = succeeded || latex_errors_count > 0;
+  g_object_set (pp, "has-details", has_details, NULL);
+
+  g_object_unref (pp_latex);
 }
 
 static void