documentation: add tutorial for first contribution

diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt
index 554a34080d7081da917cd54cd34eceb7bf4cd95c..09faee3b44db2e78ba909d30c62ff105255c7832 100644 (file)
--- a/Documentation/diff-options.txt
+++ b/Documentation/diff-options.txt
@@ -36,11 +36,21 @@ endif::git-format-patch[]
 -U<n>::
 --unified=<n>::
        Generate diffs with <n> lines of context instead of
-       the usual three.
+       the usual three. Implies `--patch`.
 ifndef::git-format-patch[]
        Implies `-p`.
 endif::git-format-patch[]
 
+--output=<file>::
+       Output to a specific file instead of stdout.
+
+--output-indicator-new=<char>::
+--output-indicator-old=<char>::
+--output-indicator-context=<char>::
+       Specify the character used to indicate new, old or context
+       lines in the generated patch. Normally they are '+', '-' and
+       ' ' respectively.
+
 ifndef::git-format-patch[]
 --raw::
 ifndef::git-log[]
@@ -148,6 +158,7 @@ These parameters can also be set individually with `--stat-width=<width>`,
        number of modified files, as well as number of added and deleted
        lines.
 
+-X[<param1,param2,...>]::
 --dirstat[=<param1,param2,...>]::
        Output the distribution of relative amount of changes for each
        sub-directory. The behavior of `--dirstat` can be customized by
@@ -192,6 +203,12 @@ directories with less than 10% of the total amount of changed files,
 and accumulating child directory counts in the parent directories:
 `--dirstat=files,10,cumulative`.
 
+--cumulative::
+       Synonym for --dirstat=cumulative
+
+--dirstat-by-file[=<param1,param2>...]::
+       Synonym for --dirstat=files,param1,param2...
+
 --summary::
        Output a condensed summary of extended header information
        such as creations, renames and mode changes.
@@ -386,6 +403,9 @@ endif::git-format-patch[]
        Turn off rename detection, even when the configuration
        file gives the default to do so.
 
+--[no-]rename-empty::
+       Whether to use empty blobs as rename source.
+
 ifndef::git-format-patch[]
 --check::
        Warn if changes introduce conflict markers or whitespace errors.
@@ -416,7 +436,7 @@ endif::git-format-patch[]
 
 --binary::
        In addition to `--full-index`, output a binary diff that
-       can be applied with `git-apply`.
+       can be applied with `git-apply`. Implies `--patch`.
 
 --abbrev[=<n>]::
        Instead of showing the full 40-byte hexadecimal object