Add flag and configuration to generate fixup commits for commits written by another author

Documentation/git-absorb.1

@@ -2,12 +2,12 @@
 .\"     Title: git-absorb
 .\"    Author: [see the "AUTHOR" section]
 .\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
-.\"      Date: 04/06/2023
+.\"      Date: 02/02/2025
 .\"    Manual: git absorb
 .\"    Source: git-absorb 0.5.0
 .\"  Language: English
 .\"
-.TH "GIT\-ABSORB" "1" "04/06/2023" "git\-absorb 0\&.5\&.0" "git absorb"
+.TH "GIT\-ABSORB" "1" "02/02/2025" "git\-absorb 0\&.5\&.0" "git absorb"
 .\" -----------------------------------------------------------------
 .\" * Define some portability stuff
 .\" -----------------------------------------------------------------
@@ -66,9 +66,14 @@ Run rebase if successful
 Don\(cqt make any actual changes
 .RE
 .PP
+\-\-force\-author
+.RS 4
+Generate fixups to commits not made by you
+.RE
+.PP
 \-f, \-\-force
 .RS 4
-Skip safety checks
+Skip all safety checks\&. Generate fixups to commits not made by you (as if by \-\-force\-author) and to non\-branch HEADs
 .RE
 .PP
 \-w, \-\-whole\-file
@@ -194,6 +199,20 @@ edit your local or global \&.gitconfig and add the following section:
 .if n \{\
 .RE
 .\}
+.SS "GENERATE FIXUPS FOR COMMITS NOT AUTHORED BY YOU"
+.sp
+By default, git\-absorb will only generate fixup commits for commits that were authored by you\&. To always generate fixups for any author\(cqs commits, edit your local or global \&.gitconfig and add the following section:
+.sp
+.if n \{\
+.RS 4
+.\}
+.nf
+[absorb]
+    forceAuthor = true
+.fi
+.if n \{\
+.RE
+.\}
 .SH "GITHUB PROJECT"
 .sp
 https://github\&.com/tummychow/git\-absorb

Documentation/git-absorb.txt

@@ -50,9 +50,13 @@ FLAGS
 --dry-run::
         Don't make any actual changes
 
+--force-author::
+        Generate fixups to commits not made by you
+
 -f::
 --force::
-        Skip safety checks
+        Skip all safety checks.
+        Generate fixups to commits not made by you (as if by --force-author) and to non-branch HEADs
 
 -w::
 --whole-file::
@@ -124,6 +128,18 @@ edit your local or global `.gitconfig` and add the following section:
     maxStack=50 # Or any other reasonable value for your project
 .............................................................................
 
+GENERATE FIXUPS FOR COMMITS NOT AUTHORED BY YOU
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+By default, git-absorb will only generate fixup commits for commits that were
+authored by you. To always generate fixups for any author's commits,
+edit your local or global `.gitconfig` and add the following section:
+
+.............................................................................
+[absorb]
+    forceAuthor = true
+.............................................................................
+
 GITHUB PROJECT
 --------------
 

README.md

@@ -102,6 +102,17 @@ edit your local or global `.gitconfig` and add the following section
     maxStack=50 # Or any other reasonable value for your project
 ```
 
+### Generate fixups for commits not authored by you
+
+By default, git-absorb will only generate fixup commits for commits that were authored by you.
+Instead, use the `--force-author` flag to generate fixup commits for commits written by any author.
+To always have this behavior, set
+
+```ini
+[absorb]
+    forceAuthor = true
+```
+
 ### One fixup per fixable commit
 
 By default, git-absorb will generate separate fixup commits for every absorbable hunk. Instead, can use the `-F` flag to create only 1 fixup commit for all hunks that absorb into the same commit.
@@ -134,7 +145,6 @@ By default, git-absorb will create fixup commits with their messages pointing to
 
 ## TODO
 
-- implement force flag
 - implement remote default branch check
 - add smaller force flags to disable individual safety checks
 - stop using `failure::err_msg` and ensure all error output is actionable by the user

src/config.rs

@@ -1,6 +1,9 @@
 pub const MAX_STACK_CONFIG_NAME: &str = "absorb.maxStack";
 pub const MAX_STACK: usize = 10;
 
+pub const FORCE_AUTHOR_CONFIG_NAME: &str = "absorb.forceAuthor";
+pub const FORCE_AUTHOR_DEFAULT: bool = false;
+
 pub const ONE_FIXUP_PER_COMMIT_CONFIG_NAME: &str = "absorb.oneFixupPerCommit";
 pub const ONE_FIXUP_PER_COMMIT_DEFAULT: bool = false;
 
@@ -20,6 +23,16 @@ pub fn max_stack(repo: &git2::Repository) -> usize {
     }
 }
 
+pub fn force_author(repo: &git2::Repository)  -> bool {
+    match repo
+        .config()
+        .and_then(|config| config.get_bool(FORCE_AUTHOR_CONFIG_NAME))
+    {
+        Ok(force_author) => force_author,
+        _ => FORCE_AUTHOR_DEFAULT,
+    }
+}
+
 pub fn one_fixup_per_commit(repo: &git2::Repository) -> bool {
     match repo
         .config()