userdiff: add support for Fountain documents

Add support for Fountain, a plain text screenplay format.  Git
facilitates not just programming specifically, but creative writing
in general, so it makes sense to also support other plain text
documents besides source code.

In the structure of a screenplay specifically, scenes are roughly
analogous to functions, in the sense that it makes your job easier
if you can see which ones were changed in a given range of patches.

More information about the Fountain format can be found on its
official website, at http://fountain.io .

Signed-off-by: Zoë Blade <zoe@bytenoise.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/gitattributes.txt b/Documentation/gitattributes.txt
index 81fe586..e3b1de8 100644 (file)
--- a/Documentation/gitattributes.txt
+++ b/Documentation/gitattributes.txt
@@ -527,6 +527,8 @@ patterns are available:
 
 - `fortran` suitable for source code in the Fortran language.
 
+- `fountain` suitable for Fountain documents.
+
 - `html` suitable for HTML/XHTML documents.
 
 - `java` suitable for source code in the Java language.

diff --git a/t/t4018-diff-funcname.sh b/t/t4018-diff-funcname.sh
index 1dbaa38..67373dc 100755 (executable)
--- a/t/t4018-diff-funcname.sh
+++ b/t/t4018-diff-funcname.sh
@@ -31,6 +31,7 @@ diffpatterns="
        cpp
        csharp
        fortran
+       fountain
        html
        java
        matlab

diff --git a/t/t4018/fountain-scene b/t/t4018/fountain-scene
new file mode 100644 (file)
index 0000000..6b3257d
--- /dev/null
+++ b/t/t4018/fountain-scene
@@ -0,0 +1,4 @@
+EXT. STREET RIGHT OUTSIDE - DAY
+
+CHARACTER
+You didn't say the magic phrase, "ChangeMe".

diff --git a/userdiff.c b/userdiff.c
index 2ccbee5..6bf2505 100644 (file)
--- a/userdiff.c
+++ b/userdiff.c
@@ -35,6 +35,8 @@ IPATTERN("fortran",
          * they would have been matched above as a variable anyway. */
         "|[-+]?[0-9.]+([AaIiDdEeFfLlTtXx][Ss]?[-+]?[0-9.]*)?(_[a-zA-Z0-9][a-zA-Z0-9_]*)?"
         "|//|\\*\\*|::|[/<>=]="),
+IPATTERN("fountain", "^((\\.[^.]|(int|ext|est|int\\.?/ext|i/e)[. ]).*)$",
+        "[^ \t-]+"),
 PATTERNS("html", "^[ \t]*(<[Hh][1-6][ \t].*>.*)$",
         "[^<>= \t]+"),
 PATTERNS("java",